Index to the US Patent Classification

Index to the US Patent Classification

What follows is part of the Index to the US Manual of Classifications for patents. As you scroll through the list and encounter a class/subclass of interest, you can jump back to the top and retreive patent titles by entering the class/subclass in the box below.


Enter a class/subclass code here to get a list of patent titles. Use any of the following forms:
363-131 121-55A 14-.5
that is, no embedded spaces, class and subclass seperated by a dash, and any subclass letters capitalized. Currently Design Patent titles (those in the classes of the form Dxx.yy) are not retreivable.

Enter class/subclass code:


PICTURE
  BRACKET SUPPORT FOR ...............248/475.1+
  EXHIBITORS ........................D06/300+
  FRAME .............................40/152
     DESIGN .........................D06/300+
     MOLDING ........................D25/119+
  HOOK OR SUPPORT FOR ...............D08/367+
     SUPPORT HARDWARE ...............D08/373+
  ILLUSION ..........................40/541
     LIGHT PIPE, FIBER OPTIC ........40/547+
  MACHINE CABINET ...................312/10.1
  MOTION ............................352/240
  PHOTOGRAPH SEE PHOTOGRAPHY
  PROJECTING ........................353
  PUZZLE ............................273/157.R
  RECORDING OR REPRODUCTION .........D14
  STANDS ............................248/441.1+
  STEREOSCOPE .......................359/466+
  TARGET ............................273/358
  TEACHING DRAWING ..................434/85+
  TOYS ..............................446/147+
  TRANSFER SEE DECALCOMANIA
  TRANSMISSION ......................358
  TRANSMITTING TO A DISTANCE (SEE TELEVISION)
  TUBES TV ..........................313/364+
  TYPE SUPPORT ......................248/466+
     STAGE ..........................472/61
     TRAVEL .........................472/60
  VIEWING APPARATUS
     FOR PHOTOGRAPHIC TRANSPARENCY
       OR X-RAY .....................40/361+
     INCLUDING ILLUMINATION .........359/798+

PICTURE WINDOW SEE CURTAIN, WALL .... 52/777+


PIE OR PIE MAKING ................... 426
  APPARATUS .........................99/450.1
     COOKING ........................99/432+
     OVERFLOW DIRECTOR OR RECEPTOR ..126/383+
     PRESSES ........................425/233+
  COOLER & STACKED ARTICLE
     CARRIER ........................294/161
     TRAY ...........................294/161
  DISPLAY CONTAINER .................206/45.32
  PANS ..............................99/DIG.15
  PIE DESIGN ........................D01
  SHAPED PACKAGING ..................206/551
  SLICING GUIDE .....................D07/673

PIER
  BRIDGE ............................14/75+
  FOUNDATION ........................405/231+
     MARINE .........................405/195.1+
  TRACK PEDESTAL ....................238/119
  WHARVES ...........................405/284

PIERCING (SEE PERFORATING, DEVICES)


PIEZOELECTRIC ....................... 310/311+
  ACOUSTIC WAVE WITH MECHANICAL      310/334
     ENERGY COUPLING ................310/334
  ACOUSTIC WAVE WITH RESONATOR ......310/322
  AGITATION APPARATUS HAVING ........366/127
  ANALYSIS
     CHEMICAL ANALYSIS, APPARATUS ...422/68.1
  CASINGS FOR .......................174/50+
  CASINGS FOR .......................220/2.1R+
  CHARGING PIEZOELECTRIC MATERIAL ...361/225+
  CLEANING PROCESSES USING134/1
     VIBRATIONS .....................134/1
  CLEANING PROCESSES USING134/17
     VIBRATIONS .....................134/17
  COMPOSITIONS ......................252/62.9
  CRYSTAL
     MAKING .........................29/25.35+
     ROCHELLE SALT ..................562/585
  ELECTRICAL DEVICES, UNDERWATER TYPE367/157+
  ELECTRICAL SYSTEMS ................310/314
  ELECTRICAL TESTING OF .............324/727
  FLUID PRESSURE TESTING HAVING .....73/754+
  GALVANOMETERS .....................324/109
  GENERATOR SYSTEMS .................322/2.R
  LIGHT VALVE .......................359/230
  MANUFACTURE .......................29/25.35
  MICROPHONES .......................381/173
  MODULATOR HAVING ..................332/139+
  MOTOR SYSTEMS .....................318/116
  PHONOGRAPH PICKUP .................369/144
  POLYMERS ..........................310/800*
  RELAY CIRCUIT .....................361/207
  SONIC TESTING HAVING ..............73/570
  SPEAKERS ..........................381/190
  SPEED RESPONSIVE APPARATUS ........73/517.R
  TELEMETERING USING ................340/870.3
     IN WELL BORE ...................340/856.4
  TRANSDUCERS .......................84/DIG.24
  UNDER WATER VIBRATION   367/157
     TRANSDUCERS ....................367/157

PIGGY BANK .......................... D99/35+


PIGMENT ............................. 106/400+
  COATING IMPLEMENT CONTAINING ......401/40+
  COMPOSITIONS CONTAINING ...........106
     SYNTHETIC RESIN OR NATURAL
       RUBBER (SEE CLASS 523, 524)
  INKWELL CONTAINING ................15/257.7+
  PRINTING ..........................101
  SOLID POLYMER CTG (SEE SYNTHETIC
     RESIN OR NATURAL RUBBER)

PIGS ................................ 428/576+
  CASTING APPARATUS .................164
     MOLDS ..........................249/174
  PIPELINE ..........................15/104.61

PIKE POLES .......................... 294/19.1+

PILE
  ARRANGEMENT HOLDER OR SPACER ......206
  BATTERY
     PRIMARY ........................429/152+
  BUILDING ..........................405/231+
     CUTTER CIRCULAR SAW TYPE .......83/743+
  DRIVERS ...........................173/90+
  FABRIC ............................139/391+
     AXMINSTER TYPE LOOM ............28/214+
     DOUBLE PILE CUTTING ............26/13+
     KNITTED ........................66/194
     KNITTING LOOP FORMING ..........66/91+
     LAMINATED ......................156
     LOOP CUTTING ...................26/8.R+
     LOOP CUTTING ON LOOM ...........139/43
     MULTIPLE SHED WEAVING ..........139/21
     TERRY ..........................139/25+
     TUBE LOOM FOR AXMINSTER TYPE ...28/216
  INSTALLING ........................405/232+
     IN MARINE ENVIRONMENT ..........405/224+
  MARINE FOUNDATION .................405/195.1+
  NUCLEAR REACTOR CORE ARRANGEMENTS .376/171
  NUCLEAR REACTOR CORE ARRANGEMENTS .376/347
  PROTECTION ........................405/211+
  RESISTOR ..........................338/204+
  RHEOSTAT ..........................338/115
     COMPRESSIBLE ...................338/101+
  SHEET .............................405/274+


PILES AND FAGOTS .................... 428/588+

PILING
  APPARATUS .........................414/788.1+
  BLEACHING AND DYEING RUNNING       8/152
     LENGTHS ........................8/152
  CONVEYER ARRANGING MATERIAL ON ....198/434+
  CONVEYOR ESTABLISHING GROUPS ......198/418+
  CONVEYOR FOR PILING BULK MATERIAL .198/508
  CONVEYOR THROWER ..................198/638+
  MATERIAL IN DRYING PROCESS ........34/38
  WEB IN ACCORDION FOLDS ............270/30+

PILL SEE PELLET
  BOX OR CONTAINER ..................206/528+
     DISPENSING SINGLE DOSE .........206/528+
     MEDICATOR CAPSULE ..............604/403+
     POCKET PEN TYPE ................206/537
     STRUCTURED DOSAGE UNIT .........424/464+
     TEAR-OFF DOSAGES ...............206/532
  COATING MACHINE ...................118/13+
  MEDICINAL DESIGN ..................D24/101+
  PRESSES ...........................425/233+
  PRESSES ...........................425/406+

PILLOW .............................. 5/636+
  COMBINED WITH GROUND MAT ..........5/419
  COVER .............................5/490
  DESIGN ............................D06/601
  DRESSING MEANS ....................5/489
  SHAM ..............................5/491

PILOCARPINE ......................... 548/315.4
  IN DRUG ...........................514/397


PILOT (SEE IGNITERS)
  AIRCRAFT CONTROL ..................244/220+
  CLUTCH CONTROL ....................192/35+
  EARTH BORING TOOL TYPE ............175/385+
  FLAMES AND FORMATION OF SAME ......431/278+
     THERMOCOUPLE CONTROLLING .......136/217+
  TRAIN CONTROL .....................246/166
  VALVE OR TRAP
     FLUID MOTOR DISTRIBUTING .......91/304+
     SERVO-MOTOR ....................91/461
     THERMAL TRAP ...................236/54
     THERMAL TRAP FLOAT CONTROLLED ..236/55
  VEHICLE FENDER ....................293/48+
  WHEEL LOCK ........................70/253

PIMARIC ACID ........................ 562/404+

PIMOZIDE, IN DRUG ................... 514/323


PIN (SEE HINGE; JOINTS; PEG; PINTLE)
  ARTICLE HOLDING BRACKET ...........248/309.2
  BEDSTEAD ELEMENT ..................5/303
  CIGAR TIP PERFORATING .............131/254
  CURB FOR WATCH BALANCE ............368/176
  CUSHION ...........................223/109.R+
  DRAFT COUPLINGS
     ANIMAL DRAFT ...................278
     RAILWAY VEHICLES ...............213/78+
  FASTENER ..........................24/706+
     ARTICLE HOLDER .................24/13
     BINDER DEVICE RELEASABLY        402
       SHEET ........................402
     BUTTON .........................24/103
     BUTTON LOOP INTERCHANGEABLE ....24/89
     COTTER .........................411/513+
     CUFF HOLDER ....................24/48
     FLOWER HOLDER ..................24/6
     HAIR ...........................132/276+
     HAIR CURLER ....................132/245+
     HAT ............................24/706+
       ATTACHED TO HAT ..............132/57.1+
     HOLDERS ........................223/109.R
     NECKTIE HOLDER .................24/49.CP
     ORNAMENTAL .....................63/20
     ORNAMENTAL DESIGN ..............D11/87
     PACKAGES .......................206/380+
     PACKAGING ......................227/25
     PENCIL HOLDER ..................24/12
     PINS COMBINED ..................24/356+
     TAG ............................40/668
     WATCHCASE ......................368/313
  FLUSH PIN GAUGES ..................33/DIG.18
  GAME ..............................473/118+
     BOWLING ........................473/118+
     PINBALL MACHINE ................273/118.R+
  LARDING ...........................99/494
  LINCHPIN
     LAND VEHICLE ...................301/113
     RAILWAY WHEEL ..................295/50
  LOOPER FOR KNITTERS ...............66/3+
  MAKING ............................163/6+
     CLOTHESPINS WIRE ...............140/83
     CLOTHESPINS WOOD ...............144/9
     COTTER PINS ....................29/5
     GLASS HEAD PINS ................65/142+
     HAIRPIN ........................140/87
     WOOD PIN POINTS
     WOOD PINS ......................144/12
  ORNAMENTAL PIN,JEWELRY ............63/20
  ROLLING ...........................492/14
  SETTER
     BOWLING PIN ....................473/73+
     BOWLING PIN SPOTTER ............473/87+
     WATCHMAKERS ....................81/8
     WOOD PIN .......................227
  SHEAR .............................464/32+
     PLOW RELEASING .................172/271
  SHIPS IMPLEMENT ...................114/221.R+
  SKEWER ............................99/419+
  SPROCKET CHAIN PIVOT ..............474/206+
  STRING TUNING MUSICAL .............84/201
  TUMBLERS LOCK TYPE ................70/378
  WHEEL .............................446/217+
  WRIST .............................74/595+

PINACOL ............................. 568/852+

PINBALL ............................. D21/7

PINCE-NEZ ........................... D16/107+

PINCERS
  LASTING IMPLEMENTS ................12/110+

PINCH
  BAR ...............................254/36+
  COCKS .............................251/5
  EFFECT, IN THERMO NUCLEAR REACTIONS376/121
  THREAD, BOLT TO NUT LOCK, DIFFERENT411/307+
     OR VARYING PITCH ...............411/307

PINCHING KINESIATRICALLY ............ 128/59

PINCUSHION .......................... 223/109.R+

PINEAPPLE
  PLANTERS ..........................111/912*


PINENE (SEE ALICYCLIC HYDROCARBON) .. 585/350+

PINHOLE
  CAMERA ............................354/202+

PINION (SEE RACK) ................... 74/434+
  MAKING ............................29/178
  TYPEWRITER FEED ...................40/330+
  WATCH .............................368/322
     CANNON .........................368/323

PINKING CUTTERS ..................... 83/918*
  MACHINES
     RECIPROCATING CUTTER ...........83/918*
     ROTARY CUTTER ..................83/333+
  SHEARS ............................30/230

PINNERS HAT MACHINES ................ 223/11

PINTLE
  BEDSTEAD ELEMENT ..................5/303
  CASTER ............................16/37
     RETAINERS ......................16/38+
  HINGE .............................16/386
     COIL SPRING ....................16/304+
     MULTIPLE PINTLE ................16/366+
     RETAINER .......................16/263+
  RAILWAY CAR JOURNAL LID ...........384/190.6

PINTSCH GAS ......................... 48/211+

PINWHEELS ........................... 446/217+
  PYROTECHNIC .......................102/359


PIPE SEE TUBE; TOBACCO .............. 138
  BENDING (SEE BENDING)
  BRIAR .............................131/230
  CAPS ..............................138/89+
     TOBACCO ........................131/176+
     VENTILATING ....................454
  CHUTE .............................193/29+
  CLEANER
     BOILER COMBINED ................122/379+
     BRUSHING MACHINE ...............15/88
     COOKSTOVE FLUE .................126/16
     DESIGN .........................D32/14
     FLUID HANDLING APPARATUS .......137/238+
     IMPLEMENT ......................15/104.3+
       OPERATED BY FLUID CURRENT ....15/104.61+
       SEWER ........................15/104.31+
     JET PUMP .......................15/408
     PROCESS ........................134/22.1+
     TOBACCO ASH RECEIVER COMBINED ..131/232
     TOBACCO SMOKING ................131/243+
     TOBACCO SMOKING COMBINED .......131/184.1
  CLOSURES OR PLUGS .................138/89+
  CONNECTIONS
     CLOSET BOWL ....................4/252.1+
  CORNCOB ...........................131/230
  COUPLERS & CONNECTORS SEE JOINTS,
     PIPES,SHAFTS,RODS,PLATES
     ELECTRICAL .....................439/207+
     ELECTRICAL BOX AND HOUSING .....174/65.R
     ELECTRICAL QUICK DETACHABLE ....439/195
     PACKING ........................277
     VALVED .........................251/142+
  COUPLING ..........................285
     VALVED .........................251/142+
  CUTTERS FOR PIPES AND RODS ........30/92+
     DESIGN .........................D08/60
     WELL TUBING ....................166/55
  DESIGN ............................D27/163+
  DISINFECTION FOR FLUSH CLOSET .....4/222+
  DRY FIRE EXTINGUISHER .............169/17
  ELIMINATION OF IN INGOT ...........29/526.2+
  FITTINGS ..........................285/120+
     MAKING .........................29/890.14+
  FLANGING MACHINES .................72/115+
  FLARING ...........................72/317
     ROTATING TOOL ..................72/115+
  FLEXIBLE
     COUPLING .......................285/238+
     STEAM LOCOMOTIVE ...............105/47
     STRUCTURE ......................138/118+
     VALVED COUPLING ................251/150
  FLUID DISTRIBUTION TYPE ...........D23/266
  FLUID PRESSURE BRAKE CONTROL ......303
  HANGERS AND SUPPORTS ..............248/49+
     DREDGERS .......................37/315+
     FOR SLENDER ARTICLE ............211/60.1
  HAWSE .............................114/179+
  HEAT EXCHANGER ....................165/177+
  HICKEYS SEE BENDING
  HOLDER ............................D27/180+
  HYDRAULIC RAM .....................417/226+
  IRRIGATION, VEHICLE SUPPORTED .....239/723+
  JACK FOR PIPES OR RODS ............254/29.R+
  JOINTS ............................285
     MAKING .........................29/428+
     MAKING .........................29/890.43
     VALVED .........................251/142+
  LAYING PIPE AND CABLE .............405/154+
     SUBMARINE ......................405/158+
  MAKING
     BENDING ........................72/367+
     CLAY SMOKING ...................425/233+
     EARTHENWARE MACHINE ............425/376.1+
     EARTHENWARE MOLD ...............249/136+
     ENCIRCLING WITH WIRE ON TAPE ...242/7.22+
     EXPANDER .......................72/317
     FITTINGS .......................29/890.14+
     FLANGING .......................72/317
     FOUNDRY MOLD MAKING ............164/176+
     GLASS ..........................65
     HEAT TREATING METAL ............148/590+
     LAMINATED ......................156
       FILAMENT WINDING BY ..........169
     METAL CASTING ..................164
       APPARATUS ....................164/421+
     METAL FUSION-BONDING APPARATUS .228
     METAL JOINT MOLD ...............249/89
     REAMER .........................408/227+
     RIVETING .......................227/52
     SOLDERING CLAMP ................269
     SWAGING ........................72/399+
     TRIMMING .......................408/28+
  ORGAN .............................84/331+
  ORGAN .............................984/11+
     AUTOMATIC ......................84/91
  PATTERN SPRAYER ...................239/548+
  POCKET CASE FOR ...................206/244
  RACK ..............................211/70.3+
     SMOKING DEVICE .................131/260
  ROTARY SHAFT ......................464/183
     JOINTS .........................464/18+
  SAND DELIVERY .....................291/41+
  SHEARING MACHINES .................30/92+
  SMOKERS PIPE LITERATURE ...........131/DIG.1
  SOAP BUBBLE .......................446/19+
  SPRINKLER .........................239/266+
  STAND (SEE TANK)
     FLUE BOILER ....................122/184+
     SUPERHEATER ....................122/475
     WATER TUBE BOILER ..............122/321+
     WATER TUBE BOILER COIL OR LOOP .122/244+
     WATER TUBE BOILER LOOP .........122/281
     WATER TUBE BOILER SPUR .........122/307+
  STEMS .............................131/227+
  STOVE .............................126/307.R+
     DAMPER .........................126/292+
     OVEN ...........................126/17
     WATER HEATER ...................126/364+
  STRAINERS .........................4/DIG.13
  STRUCTURE .........................138/177
     END COMBINED ...................138/109
  SUPPORTS ..........................248/49+
  TAMPER TOBACCO SMOKERS ............131/247+
  THREAD ............................285/390+
     PROTECTORS .....................138/96.R
  THREADING
     CUTTING ........................408
     MILLING ........................409/65+
     ROLLING ........................72/126
  TOBACCO ...........................131/330+
     CARTRIDGE ......................131/348
     TOY ............................446/24
  TRAIN .............................239/723+
  WASTE .............................4/679+
  WELL
     CLEANER COMBINED ...............166/173+
     CUTTER OR PERFORATOR ...........166/55
     DESTROYING .....................166/373+
     EXPANSIBLE .....................166/207
     JOINING ........................166/373+
     PLURAL CONCENTRIC ..............285/138+
     SCREEN COMBINED ................166/227+
     STRUCTURE ......................166/242
     WEAKENING ......................166/55
  WRENCHES ..........................81/52+

PIPELINE
  CLEANER ...........................15/104.3
  FILTERS ...........................210/435+
     INTAKE .........................210/460+

PIPERAZINES ......................... 544/358+

PIPERIDINE .......................... 546/184+

PIPERONAL ........................... 549/436


PIPETTE ............................. 73/864.1+

PIPETTE ............................. 422/100
  ABSORPTION FOR GAS ANALYSIS .......422/83+
  BODY CONTACTING,EG,HYPODERMIC
     NEEDLE, SYRINGE ................604/181
     DESIGN .........................D24/112+
     DESIGN .........................D24/222+
  CHEMICAL ANALYSIS, APPARATUS ......422/82.5
  CHEMICAL APPARATUS ................422
  CHEMICAL METHODS ..................23
  CONTAINER CAP COMBINED ............141/29
  CONTAINER OR CONTAINER CLOSURE ....141/22+
     BULB TYPE, EG EYE DROPPER ......141/24
  DISPENSING ........................222
     DROP FORMERS ...................222/420
  MEDICINAL .........................604/295+
     DESIGN .........................D24/112+
  SUCCESSIVE RECEIVERS FILLED FROM
     CONTINUOUSLY FLOWING SOURCE ....141/130

PIPINGS ............................. 36/57

PIPINGS, UPHOLSTERY TRIM ............ 428/123

PIROMIDIC ACID, IN DRUG ............. 514/303


PISTOL
  GRIP ..............................42/71.2+
     MAGAZINE .......................42/7
  HOLSTERS ..........................224/193
     DESIGN .........................D03/101
     FOR EITHER SIDE OF TORSO .......224/192
     LEATHER OR FLEXIBLE FABRIC .....224/911*
     METAL OR RIGID MATERIAL ........224/912*
     ROTATABLY OR SWINGABLY ATTACHED 224/198
     SHOULDER .......................224/206
     WITH CLOSURE FLAP ..............224/238
     WITH GUN POSITIONER ............224/243
  REVOLVERS .........................42/59+
     DESIGN .........................D22/104+
  SWORDS ............................42/53
     DESIGN .........................D22/118
  WATER .............................222/79


PISTON (SEE ASSOCIATED DEVICE)
  CLEANER FOR PLUGS AND PISTONS .....15/104.11+
  DOOR CHECK ........................16/49+
  EXPANSIBLE CHAMBER DEVICE .........92
     ANNULAR ........................92/107+
     MULTIPLE .......................92/61+
     OSCILLATING ....................92/120+
  FILLER FOR FOUNTAIN PENS ..........401/171+
  FIRE EXTINGUISHER .................169/33
  FREE PISTON .......................60/910*
  HAMMER OF TOOL DRIVE ..............173/206+
  HYPODERMIC ........................604/218+
  INTERNAL COMBUSTION ENGINE ........123/193.1
  MANUFACTURE .......................29/888.4+
     GRINDING .......................51/289.R
  METER .............................73/232+
  PACKING ...........................277
     DIGEST .........................33/DIG.15
  PRESSURE GAUGE ....................73/744+
  RING ..............................277
     ASSEMBLING AND DISASSEMBLING ON 29/222
       PISTON .......................29/222+
     GAUGE,RING & BEARING RACE ......33/DIG.17
     GROUP CONTRACTING FOR WORKING ..29/269
     LUBRICATION COMBINED WITH
     MAKING .........................29/888.7+
     TESTING ........................73/120
     TESTING FOR LEAKAGE ............73/47
  ROD (SEE ROD CONNECTING) ..........74/579.R+
     LUBRICATORS ....................184/24+
     VALVED PISTON COMPRESSOR OR     417/545
       PUMP COMBINED ................417/545+
  ROTARY ENGINE .....................123/200+
  ROTARY FOR MOTORS .................418/68
  SAUSAGE STUFFER ...................452/40+
  SYRINGE ...........................604/218+
  VALVE .............................251/324+
     CHECK TYPE .....................137/538
  VALVED
     PUMP LIQUID ....................417/545+

PIT REMOVER ......................... 30/113.1+


PITCH SEE TAR
  CHANGING
     CONVEYOR SCREW .................198/659
     IMPELLER .......................416/25+
     MUSICAL INSTRUMENT .............84
     PUMP IMPELLER ..................415/129+
     SHIP PROPELLER .................440/50
  FUEL CONTAINING ...................44
  IONIZED GAS
     FLUENT MATERIAL SUPPLIED SPACE  313/231.1+
       DISCHARGE DEVICE .............313/231.1+
  MAKING, TREATING AND RECOVERY .....208/39+
  MINERAL OIL ONLY ..................208/22+
  MUSIC DEVICE FOR GIVING PITCH .....84/454+
  PLASTIC COMPOSITIONS CONTAINING ...106
  PRODUCTION BY DISTILLATION ........201

PITCHER ............................. 222
  DISPENSING TYPE WITH HANDLE .......222/465.1+
  HANDLE, ASYMMETRIC ................D08/DIG.9
  WITH FLOW CONTROLLER OR CLOSURE ...222/556+

PITCHFORK ........................... 294/55.5+
  CUTTER COMBINED ...................7/115+
  MAKING
     BLANKS AND PROCESSES ...........76/111
     DIES ...........................72/470+

PITCHING CASKS ...................... 118

PITCHOMETERS ........................ 33/530

PITMAN SEE CONNECTING ROD ........... 74/579.R+
  BEARING ...........................384/266+
  MAKING ............................29/888.9


PITON ............................... 248/216.1+
  MOUNTAIN CLIMBING AIDS ............248/925*

PITOT METER ......................... 73/861.65+

PITTER .............................. 99/547+

PIVAMPICILLIN ....................... 540/336

PIVOT (SEE HINGE; JOINTS)
  BEARING ...........................384/192+
  KNIFE-EDGE FULCRUM ................384/4+
  ROTARY CRANE ......................212/253
  TEETH .............................433/220+
  TURNTABLE .........................104/46

PKU ................................. 436/108

PLACARD FRAMES ...................... 40/152+

PLACEMAT
  FURNITURE PROTECTOR ...............D06/613+
  PAPER .............................D06/613+

PLACERS (SEE ARRANGING; PILING)
  ELECTRICAL WIRING .................254/134.3R
  HAMMER WITH NAIL PLACER ...........81/23+
  TRACK TIES ........................104/6
  TRACK TORPEDO .....................246/216


PLACKET ............................. 2/218

PLAIT AND PLAITING
  APPAREL MAKING ....................223/28+
  BOX MAKING ........................493/162+
  KNITTING ..........................66/14
  LAMINATED PILE FABRIC MAKING ......156
  TUCKING ...........................112/145

PLANES
  WOODWORKING .......................30/478+

PLANETARIUM ......................... 434/286

PLANETARY (SEE GEAR AND GEARING)

PLANIMETER .......................... 33/122

PLANING DEVICES
  BENCH PLANES FOR WOOD .............30/478+
  HAIR PLANER .......................30/30+
  PLANER TYPE COMBINED MACHINE ......29/30
  PLANING MACHINE ...................409/288+
  STAVE JOINTING ....................147/33
  STONEWORKING ......................125/9
  WOOD SAW TEETH ....................83/835+
  WOOD SLIVERING SCORING ............144/186+
  WOODWORKING .......................144/114.R+
  WOODWORKING COMBINED MACHINE ......144/36+


PLANK AND PLANKING (SEE PANEL)
  CLAMP PORTABLE FOR ................269/91+
  PAVEMENT ..........................404/17+
  RAILWAY TRUCK PLANK ...............105/208
  SCAFFOLD ..........................182/222+
  SHIP ..............................114/84

PLANOGRAPHIC
  PRINTING ..........................101/130+
     ELECTROLYTIC COATING ...........205/127
     MULTICOLOR SURFACE MAKING       430/301
       PHOTOGRAPHIC .................430/301
     SURFACE MAKING PHOTOGRAPHIC ....430/300+

PLANS
  BUILDING ..........................52/234+
     STORE ..........................52/33
     TRAFFIC GUIDE ..................52/174


PLANT ............................... 80/200+
  BUD ...............................80/200
  CARNATION .........................80/DIG.1
  CHRYSANTHEMUM .....................80/DIG.12
  CORN ..............................80/DIG.56
  DERIVED FROM EMBRYOGENESIS ........80/205+
  DERIVED FROM MUTAGENESIS ..........80/230
  DERIVED FROM PROTOPLAST CELL       80/220
     FUSION; SOMATIC CELL FUSION ....80/220
  DERIVED FROM RECOMBINANT OR        80/205
     TRANSGENIC PROCESSES;80/205
     TRANSFORMATION .................80/205
  DERIVED FROM SPONTANEOUS MUTATION .80/230
  DERIVED FROM TISSUE CULTURE        80/205+
     REGENERATION ...................80/205
  DERIVED FROM TRADITIONAL BREEDING  80/200
     TECHNIQUES .....................80/200
  DICOTYLEDON SEED (DICOT) ..........80/255
  EMBRYO ............................80/200+
  EMBRYOID ..........................80/200+
  FLOWER ............................80/200
  FLOWERING PLANT ...................80/DIG.67+
  FRUIT .............................80/200
  FRUIT PLANT .......................80/DIG.64+
  FUSION PRODUCT ....................80/220
  GRAFT OR PLANT WITH GRAFTED PART ..80/240
  GYMNOSPERM ........................80/DIG.49+
  LEAF ..............................80/200
  MERISTEM ..........................80/200
  MUTANT PLANT ......................80/230+
     MONOCOT (E.G  MAIZE) ...........80/235
  OTHER PLANT PARTS .................80/200
  PEAR ..............................80/DIG.35
  PLANTLET ..........................80/200+
  RECOMBINANT PLANT .................80/205
  RICE ..............................80/DIG.57
  ROOT ..............................80/200
  ROSE ..............................80/DIG.36
  SEEDLING ..........................80/200
  SEEDS, GENETICALLY MODIFIED .......80/250
  SHOOT .............................80/200+
  STEM ..............................80/200
  TUBER .............................80/200
  VEGETABLE PLANT ...................80/DIG.71
  WHEAT .............................80/DIG.58

PLANT CELL CULTURE .................. 435/240.4+


PLANT CELL GROWTH MEDIA ............. 435/240.54+

PLANT CELL PER SE ................... 435/240.4+

PLANTERS AND PLANTING
  AGRICULTURAL ......................111
     BROADCASTING ...................111/130+
     DIBBLING .......................111/89+
     DRILLING .......................111/14+
     LIQUID OR GAS ..................111/118+
     PLANT SETTING ..................111/100+
  CORN PLANTER CLUTCHES .............192/23


PLANTS
  ATTACK RESISTANT STOCK ............428/907*
  CATALYSTS AND STIMULANTS ..........504/116+
  COATING OF ........................427/4
  CUTTING AND COMMINUTING
     DISCRIMINATE ...................99
     INDISCRIMINATE COMMINUTING .....241
     INDISCRIMINATE CUTTING .........83
  EXTRACTS SEE EXTRACTS
  FOOD ..............................99
  GAS MAKING ........................48
  HEAT OR POWER
     AIRCRAFT .......................244/53.R+
     BOILER .........................122/1.R+
     DYNAMOELECTRIC .................290
     HEAT AND POWER COMBINED ........237/12.1+
     HEATING SYSTEMS ................237/13
     POWER ..........................60
  HUSBANDRY SEE PLANT CLASS .........47
     COMPOUND TOOLS .................7/114+
     COVERS,SHADES AND SCREENS ......47/26+
     DIGGERS ........................171
     FERTILIZERS ....................71
     FERTILIZERS ....................47/48.5
     FRUIT CUTTERS AND CORERS .......30/113.3
     GARDEN HOSE ....................138/118+
     GARDEN RAKE ....................56/400.1
     GREENHOUSES ....................47/17+
     HARROWS ........................172
     HARVESTERS .....................56
     HOTBEDS AND COLDFRAMES .........47/19
     NUTRIENT SUPPLY ................47/62+
     ORNAMENTAL BEDS ................47/33
     PLANTING .......................111
     PLOWS AND CULTIVATORS ..........172
     POLLINATION ....................47/1.41
     POTS AND RECEPTACLES ...........47/66+
     POWDER DUSTERS OR SPRAYERS .....239
     PRESSES FOR BALERS .............10
     SPRAYERS MIXING AND DISSOLVING .239/310+
     TERRARIUM ......................47/69+
     THRESHING ......................460
     TREE FUMIGATORS ................43/126
     TREE HACKS .....................30/121
     WATER CULTURE ..................47/59+
  LIGHTS ............................362/805*
  LIVING ............................80/200+
  METALLURGICAL .....................266/142+
  MOLDING ...........................425
     BRICKMAKING ....................425/88
  NAMEPLATES OR CARDS FOR ...........40/645+
  NUCLEAR ...........................376
  PATENTED VARIETIES OF .............PLT
  PLANTING ..........................111
     DISPENSING SEED ................222
     GRAIN DRILL CHUTES .............193/9
  PRESERVING ........................47/58
     COATING ........................427/4
     CUT FLOWER HOLDER ..............47/41.1+
  STALKS RETTING ....................162/1+
     RETTING BACTERIOLOGICAL ........435/279+
  STANDS ............................47/39+
  THINNERS ..........................172/534+
     EARTH WORKING FUNCTION .........172/900*
     PLANT SENSOR ACTIVATES POWER ...47/1.43

PLAQUE .............................. 428/913.3*
  HOLDER ............................248/488+
  HOLDER ............................248/490+
  LAYER NON-PLANAR ..................428/174+
  LAYER VARYING THICKNESS ...........428/156+
  PANEL TYPE, SECTIONAL LAYER .......428/44+
  WALL DECORATION ...................D11/132+

PLASMA .............................. 424/530
  BLOOD COMPONENT ...................424/530
     DRYING AND FREEZING ............34/5
  GAS
     CHEMICAL PROCESS EMPLOYING .....204/164+
     INJECTING FUEL INTO BODY OF     376/127
       PLASMA .......................376/127
     ION PRODUCER ...................361/230
     MAGNETOHYDRODYNAMIC GENERATOR ..310/11
     MOVING OR SHIFTING PLASMA ......376/107
     NUCLEAR FUSION REACTIONS .......376/100
       CONTAINMENT BY MAGNETIC FIELD 376/121
     SYSTEMS ........................315/111.21+

PLASMID ............................. 435/320.1

PLASTER OF PARIS (SEE PLASTER) ...... 106/772+


PLASTER OR PLASTERED (SEE PLASTERING;
 PLASTIC)
  BOARD .............................52/443+
     ATTACHED TO FURRING ............52/344+
     EDGE JOINT .....................52/448+
     LAMINATE .......................428/411.1+
     MAKING .........................156/39
  CORNER ............................52/250+
  CUTTERS
     HAND MANIPULABLE ...............30/165+
     MACHINES .......................83
     POINTERS .......................15/235.3
  MEDICATED COMPOSITION .............424
  ON BRICK ..........................52/444
  PANEL STRIP .......................52/459
  PLASTER OF PARIS ..................106/772+
     ALKALI METAL SILICATE106/611
       COMPOSITION ..................106/611+
     COMPOSITIONS ...................106/772+
     PROCESSES OF BURNING ...........106/765+
     SPLINT .........................602/8+
  SCREED ............................52/364+
  SLATTED LATH ......................52/341+
  SURGICAL BODY WEAR ................607/149+
  TRIMMERS ..........................433/144

PLASTERING
  APPLICATOR-MATERIAL SUPPLIED ......15/104.93
  FOUNTAIN-TROWEL ...................15/235.4
  MACHINES ..........................425/62
  MACHINES ..........................425/87
  MORTAR-JOINT FINISHER .............15/235.3
     COMBINED .......................15/105.5
  TROWEL ............................15/235.4+


PLASTIC SEE PLASTER; POLYMER
  BLOCK AND EARTHENWARE APPARATUS ...425
  CHAIN, STAPLE, HORSESHOE MAKING ...59
  COATING ...........................106
  COMPOSITIONS
     MEDICATED ......................424
       BIOACTIVE, SYNTHETIC .........424/78.1+
       NONBIOACTIVE, SYNTHETIC ......514/772.1+
     NONSOLID PLASTICS ..............106
     SOLID PLASTIC ..................520
  CUTTERS ...........................30/115
  DEFORMATION, PRESSING, OR TREATING
     METAL DEFORMATION ..............72
     METAL FUSION BONDING ...........228
     PRESSES ........................10
     SHAPING OR TREATING APPARATUS ..425
     SHEET METAL CONTAINER MAKING ...413
     STATIC MOLDS ...................249
     WIREWORKING ....................140
  DYEING OF .........................8
  JEWELRY ...........................63/DIG.3
  METALWORKING ......................72/253.1+
     SUPERPLASTIC MATERIAL ..........72/709*
  PLASTICS ..........................425
     APPARATUS FOR MANUFACTURING ....425
     MISCELLANEOUS ARTICLES .........428
  SCREWS, BOLTS, NAILS ETC ..........411/904*
  SHAPING OR TREATING ARTICLES
     APPARATUS ......................425
     COMPUTER CONTROLLED, MONITORED .364/473
     PROCESSES ......................264
  STRUCTURES
     BRUSH OR BROOM TUFT SOCKET .....15/193
     COFFINS ........................27/7
     FENCE CONNECTIONS RAIL .........256/66
     FENCE CONNECTIONS WIRE .........256/50+
     FENCES .........................256/19
     HOOK ...........................24/907*
     LACING EYELET ..................24/713.8
     LACING HOCKS ...................24/714.3
     RAILWAY TIES ...................238/84+
     SEAT COVERS ....................297/219.1+
     SETTABLE MATERIAL MASONRY ......52
     SPLINTS ........................602/6+
     SYNTHETIC RESIN BUILDING        52/309.1
       COMPONENT ....................52/309.1+
  TESTING OF ........................73/150.R


PLASTICIZING
  CASEIN CTG COMPOSITIONS ...........106/147
  GELATINE CTG COMPOSITIONS .........106/136
  POLYMER TREATING (SEE SYNTHETIC
     RESIN OR NATURAL RUBBER)
  TEXTILES ..........................8/130.1+


PLATE
  ANTISKID FOR TIRES ................152/225.R+
  BAKING ............................99/372
  CLEANERS
     BRUSHING .......................15/77
     WIPING .........................15/102
  COMPOUND METAL ....................428/615+
  DENTAL ............................433/167+
  DESIGN, HOUSEHOLD .................D07/500+
  DISTRIBUTION FOR ELECTRIC WIRES ...174/40.R+
  ELECTRIC
     CONDUCTOR ......................191/13
     CONSUMABLE ELECTRODE ...........314/44
     FACE ...........................220/241
     FACE SWITCH ....................174/66+
     FLUORESCENT ....................250/466.1
     SWITCH .........................20/271
     SWITCHBOARD ....................361/627+
  ELECTROPHOTOGRAPHIC COPIER ........355/211+
  ESCUTCHEONS .......................70/452
     DOOR KNOB ......................292/357
  FACE ..............................220/241
     ELECTRIC HOUSING ...............174/66
     GRINDING AND POLISHING .........51
     LOCK ...........................70/450
     MAKING .........................65
  HINGE .............................16/251
  ILLUMINATION LENS PERFORATED ......362/456
  JOINTS AND COUPLINGS (SEE JOINTS)
     PIPE AND PLATE .................285/189+
     PIPE AND PLURAL PLATE ..........285/128+
     PIPE AND PLURAL PLATE SPACED ...285/19+
     ROD AND PLATE ..................403/230+
     THROUGH PLATE INSULATOR ........174/151+
     WITH INTERMEDIATE MEMBER .......403/187+
  KICK ..............................16/1.R
     KICK GUARD .....................16/DIG.2
  KNOB ROSE .........................292/357
  LICENSE ...........................40/200+
  LIFTERS ...........................294/27.1+
  LIFTING CLAMP .....................294/901*
  LIQUID HEATER OR VAPORIZER ........122/208
  NAIL PLATES .......................411
     DISTRIBUTORS ...................470/168+
     HORSESHOE NAILS ................411
  NAME ..............................40
     HOUSES .........................40
     LETTER BOX .....................232/46
  NUCLEAR FUEL ......................376/432
  PACKAGES ..........................206/449+
  PATTERN FOUNDRY TYPE ..............164/241
  PHOTOGRAPHY
     CAMERA .........................354
     COATING APPARATUS ..............118
     PLATE HOLDERS ..................354/276+
     PLATES .........................430/495+
     X RAY PLATE CHANGERS ...........378/172
     X RAY PLATE HOLDERS ............378/167
  PORTABLE CLOSURE FASTENER .........292/289+
  PRINTING ..........................101/395
     ADDRESSING .....................101/369+
     CASTING ........................164/2+
     COATING ELECTROLYTICALLY .......205/127
     MAKING ELECTROLYTICALLY ........205/69
     MAKING STEREOTYPE ..............29/21
     MOUNTINGS ......................101/382.1+
  PRISM FOR OVERHEAD LIGHTING .......362/326+
  PUSH ..............................16/1.R
  RACKS FOR .........................211/41
  RAILWAY
     DRAFT CHEEK ....................213/54+
     FROG ...........................246/462
     RAIL BASE PLATE ................238/209+
     SWITCH .........................246/453
     TIE ............................238/287+
  RECTIFIERS, DRY ...................257
  SOUNDING FOR PIANOS ...............84/184+
  STENCIL ...........................101/127+
     PLATE ..........................101/112
  STOCK METAL .......................428/615+
  STORAGE BATTERY ...................429/209+
  STOVE .............................126/81
  STOVEPIPE THIMBLE .................126/317
  TABLE ARTICLE .....................220/574
     DESIGN .........................D07/500+
     DESIGN, SIMULATIVE .............D07/571
  TRANSFORMER .......................336
  TUMBLERS LOCK TYPE ................70/377
  TURNERS ...........................294/6
  WATCH .............................368/318
     DESIGN .........................D10/123+


PLATEN
  COPYHOLDING (SEE COPYHOLDER)
  ELECTROPHOTOGRAPHIC COPIER ........355/230+
  HEAT EXCHANGER ....................165/168+
  LIQUID EXTRACTING PRESS ...........10/295+
  MEMORANDUM PAD TYPE ...............281/6+
  METAL ROLLING .....................72/88+
     ROLL AND PLATEN ................72/88+
     SCREW THREAD ...................72/88+
  PRINTING PRESS BED AND PLATEN TYPE 101/287+
     ADDRESSING MACHINE .............101/57+
     INTAGLIO .......................101/163+
     MULTICOLOR .....................101/193+
     NUMBERING ......................101/78+
     ROLLER AND PLATE INKER .........101/338+
     ROLLER TYPE INKER ..............101/359+
     SELECTIVE OR PROGRESSIVE .......101/93+
     SPECIAL ARTICLE ................101/41+
     TICKET MACHINE .................101/66+
  RECIPROCATING PRESS ...............10/214+
  SMOOTHING AND PRESSING TEXTILES ...38/17+
     CONVEYOR BELT COMBINED .........38/10
     IMPLEMENTS .....................38/71+
     MULTIPLE COOPERATIVE ...........38/5
     STRUCTURE OF ...................38/66
     WITH FLUID FLOW ................38/15+
  STAMPING RECORDER .................346/78
  TEXTILE FELTING ...................28/139+
  TYPEWRITER ........................40/648+
     CARD HOLDER COMBINED ...........40/525+
     CASE VERTICAL SHIFT ............40/264+
     DIVIDED ........................40/585+
     FLAT ...........................40/23+
     INDEX WHEEL ....................40/158+
     KEY WHEEL ......................40/158+
     ROCKER PLATEN ..................40/649+
     SHIFT LOCK .....................40/274+
     WEAR DISTRIBUTORS ..............40/554+
  WASHING TEXTILES
     ROLL AND PLATEN SCRUBBER TYPE ..68/86+
     SCRUBBING BY CARRIER ROLL       68/42
       AND PLATEN ...................68/42

PLATERS RAILWAY TIE ................. 104/16