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:


CATCH SEE ASSOCIATED DEVICE
  BASIN
     DISPENSER TYPE DRIP ............222/108+
     DISPENSER TYPE INVERTED
       CONTAINER ....................141/364
     FOUNTAIN TYPE ..................239/28+
     SEWAGE TYPE ....................210/532.1+
  DOOR AND WINDOW ...................292
  DUMPING VEHICLES LAND TYPE ........298/38
  HOLDER FOR FISH ...................43/55

CATCHER (SEE DRIP, CATCHER)
  AERIAL PROJECTILE PROJECTOR AND ...273/318+
  ANIMAL HUSBANDRY ..................119/801+
  BAND SAW MACHINE ..................83/814+
  BODY ..............................182/137+
  DISPENSER WASTE ...................222/108+
  FISH AUTOMATIC ....................43/15+
  HARVESTER
     CORNSTALK CHOPPER ..............56/61
     CORNSTALK MOTOR TYPE WITH
       CHOPPER ......................56/16.6
     CORNSTALK TOPPER ...............56/56+
     CUTTER AND ENDLESS CARRIER
       WITH DISCHARGING .............56/184
     CUTTER WITH DETACHABLE .........56/5
     CUTTING COMBINED ...............56/202+
     CUTTING REEL COMBINED ..........56/199+
     DUMP RAKE AND CUTTER COMBINED ..56/166
     FRUIT ..........................56/329
     SHELLED GRAIN ..................56/207
  INSECT ............................43/133+
  INVERTED CONTAINER DRAINAGE .......141/364
  RAILWAY DROPPINGS .................104/133
  STOVE AND FURNACE SOOT ............126/280
  TRAPS .............................43/58+
     FISH ...........................43/100+
     INSECT ADHESIVE TYPE ...........43/114+
  VEHICLE BRAKES ON TRACK TYPE ......188/63

CATENARY
  TROLLEY WIRE SUPPORTS .............191/41


CATERACT CORRECTION LENSES .......... 351/167

CATERPILLAR T.M  TRACK SEE TRACK

CATHANODE ........................... 313/305

CATHARTIC COMPOSITION ............... 424

CATHEAD
  AUTOMATIC .........................254/373
  DRUM ..............................242/117

CATHETER
  MILKER ............................119/14.19+
  SURGICAL ..........................604/96+
     COUPLINGS ......................604/280+
     DESIGN .........................D24/112+
     FLEXIBLE .......................604/280+
     GENITAL ........................604/264+
     INFLATABLE .....................604/96+
     INTRAVENOUS ....................604/53
     MANIPULATIVE ...................604/53


CATHODE
  ARC LAMP ..........................313/326+
  ELECTROLYTIC ......................204/280+
  ELECTRONIC TUBE EG RADIO TUBE .....313/346.R+
  FORMS FOR GALVANIC APPARATUS ......204/280+
  GAS OR VAPOR LAMP .................313/326+
  MAKING FOR DISCHARGE DEVICE .......445/46+
     WITH ASSEMBLY ..................445/35+
  RAY TUBE
     CIRCUIT BLANKING ...............315/384
     FACSIMILE SYSTEMS ..............358/485+
     FOCUS COIL AND .................313/442
     FOCUS COIL PER SE ..............335/213+
     IMAGE PICK-UP TUBE .............313/365+
     MANUFACTURING ..................445/36+
       BY PHOTOGRAPHY ...............430/23+
     MUSIC APPLICATION ..............84/DIG.6
     OSCILLOGRAPHS ..................346/110.R
     OSCILLOSCOPES ..................324/121.R
     REPAIR .........................445/2
     SCREEN .........................313/461
       USED IN TEACHING .............434/307
       USED IN TEACHING .............434/323
     STORAGE ........................313/391+
     STRUCTURE ......................313/364+
     SYMBOL GENERATION ON SCREEN ....345/10
     SYSTEMS ........................315/1+
     TELEVISION RECEIVER ............358/188
     TELEVISION SCANNER .............358/199+
     TELEVISION SYSTEMS .............358/83+
     TELEVISION TRANSMITTER .........358/186+
     WORK HOLDER FOR ................269/908*
  SPUTTERING
     APPARATUS ......................204/298.1+
     PROCESSES ......................204/192.1+

CATNIP BALL ......................... 119/707+

CATSUP .............................. 426/615

CATTLE GUARD
  FENCES ............................256/14+
  TRACK TYPE AUTOMATIC RETURN GATE ..49/133+


CAULKING GUN ........................ D08/14.1

CAUSTIC
  ALKALIS ...........................423/641

CAUTER
  ELECTRIC ..........................219/232+
  ELECTRIC ..........................219/236
  LIQUID OR GASEOUS FUEL ............126/405+
  SURGICAL COMBINED .................606/44

CAVE ................................ 52/169.1+

CAVIAR .............................. 426/643
  CANNED ............................426/131

CAVITY RESONATOR .................... 333/227
  IN CATHODE RAY TUBE ...............315/5+
  IN ELECTRONIC TUBE ................315/39+
     MAGNETRON ......................315/39.51+
  SPECTROMETER ELECTRICAL ...........324/316+

CEILING ............................. 52
  BLOCK .............................439/450
     ARTICLE SUPPORTED FROM .........52/39
     QUICK DETACHABLE ...............439/450
  CARGO SHIP ........................114/76
     SPACED ROOF ....................52/22
     SUSPENDED ......................52/484+
     WAFFLE TYPE ....................52/337
  LIGHTS ............................362/147+


CEILING
  WOOD BUILDINGS
     CENTERPIECES ...................52/311.1

CELCON (RESIN FROM TRIOXANE AND       528/250
 ETHYLENE OXIDE) ....................528/250

CELERY
  BLANCHING .........................47/3
  HARVESTERS ........................171/21+
  PLANTERS ..........................111/100+
  SALT ..............................426/638

CELESTE ............................. 84/DIG.4
  ORGAN STOPS .......................84/371

CELL
  ACETYLENE GAS GENERATOR ...........48
  AIRSHIP GAS .......................244/128
  BOX OR RECEPTACLE
     MAKING, PAPER ..................493/90
     METALLIC .......................220/507
     PAPERBOARD .....................229/120.2+
     WOODEN .........................217/18+
  CARTRIDGE BELT BLOCK ..............224/239
  DRY ...............................429/163+
  ELECTRIC ..........................429
     CHEMICAL .......................429
     PHOTO ..........................136/243
     RAILWAY ROLLING STOCK SYSTEMS ..105/51
     THERMO .........................136/200+
  ELECTROLYTIC ......................204/194+
     CIRCUIT INTERRUPTION TYPE ......361/435
     TESTING ........................204/400+
  GALANIC, GAS TYPE .................429/12+
  JAIL ..............................52/106
  LEECHING OR DIFFUSING .............127/7
  PHOTO ELECTRIC ....................136/243+
  QUEEN BEE .........................449/8
  STORAGE BATTERY ...................429/149+
  SUPPORT FOR REMOVABLE CELL ........429/96+


CELLAR .............................. 52/169.1+

CELLO SEE VIOLIN .................... 84/274

CELLOPHANE
  COMPOSITIONS ......................106/168
  MAKING ARTICLE FROM ...............493

CELLOSOLVE T M ...................... 568/678

CELLULAR (SEE POROUS)
  GLASS BODY MAKING .................65/22
  GLASS COMPOSITION .................501/39
  LAMINATE ..........................428/304.4+
     FORMING BY SPACED SEALING ......156/290+
  MAGAZINE TYPE
     CABINET ........................312/97.1
     DISPENSER ......................221/69
  PLANT OR ANIMAL MATERIAL, POLYMER
     CTG OR DERIVED FROM (SEE
     SYNTHETIC RESIN OR NATURAL
     RUBBER)
  POLYMER (SEE ALSO SYNTHETIC RESIN  521/134+
     OR NATURAL RUBBER) .............521/134
  SPRING MATTRESSES .................5/475+

CELLULOID T M ....................... 106/169+


CELLULOSE AND DERIVATIVES ........... 536/56+
  COMPOSITIONS ......................106/163.1+
  ESTERS ............................536/58+
     COMPOSITIONS ...................106/169+
  ETHERS ............................536/84+
     COMPOSITIONS ...................106/169+
  FERMENTATION OF ...................435/179
  FERMENTATIVE TREATMENT ............435/277+
  HYDROLYSIS TO SUGARS ..............127/37
  LIBERATION ........................162/1+
  NITROGEN CONTAINING ...............536/30+

CEMENT (SEE ADHESIVE)
  ALUMINOUS CEMENT ..................106/692
  CLINKER ...........................106/739+
  CLINKER ...........................106/739+
  COMPOSITIONS CONTAINING ...........106/638+
     REFRACTORY .....................501/124
  CYCLE TIRE ........................106/33
  EARTH TREATMENT WITH ..............405/266+
     INJECTOR .......................405/269
  MAGNESIA SOREL ....................106/685+
  MANUFACTURING PROCESSES ...........106/739+
  PORTLAND ROMAN ....................106/713+
  ROADS .............................404/17+
     MAKING .........................404/72+
     SHEET STRUCTURE ................404/17+
  SHOE SOLE ATTACHED BY .............36/19.5

CEMENTING
  IMPLEMENTS ........................15/235.4+
  LINING AND COATING PIPES ..........118/105
  LINING AND COATING PIPES ..........118/125
  LINING AND COATING PIPES ..........118/404+
  LINING AND COATING PIPES ..........425/110+
  LINING AND COATING PIPES ..........425/460
  SHOE MAKING .......................118/410+
  WELL CEMENTING PROCESSES ..........166/285+


CENTER
  DRILLING WORK SUPPORT .............408/72.R+
  GAUGE .............................33/670+
  LATHE CENTERS .....................82/151+
  MAKING IN WORK FOR MOUNTING .......408/199+
  MILLING TAIL STOCK ................409/242
  WOODWORKING LATHE .................142/53

CENTER OF GRAVITY MEASURING ......... 73/65.1

CENTER PUNCH ........................ 30/366
  LOCATING ..........................33/670+
  SHEETS OR BARS ....................30/366

CENTERBOARD ......................... 114/127+

CENTERERS ........................... 82/170

CENTERING DEVICES
  ALIGNING TOOL .....................29/271+
  CIRCULAR SAW ON WORK HOLDER .......76/79
  LOCATING ..........................82/170
  MOLD FOR ARCH OR TUNNEL
     REPOSITIONING MEANS FOR         425/63
       PROGRESSIVE MOLDING ..........425/63
     USING SUBTERRANEAN FEATURE .....425/59
     WITH VEHICLE TO MOVE APPARATUS .425/62
  SLIDE IN CYLINDER .................175/325.1+
  WELL CASING TYPE ..................166/241.1+

CENTERLESS GRINDING ................. 51/103.R
  PROPELLING WORK THROUGH ...........51/74.R+
  WORK REST FOR .....................51/238.R


CENTRAL HEATING SYSTEMS ............. 237/13


CENTRIFUGAL FORCE
  ASSORTING .........................209/642
  BRAKE SYSTEMS FLUID ...............384/168
  BRAKES ............................188/180+
     FISHING REEL ...................242/287
  CENTRIFUGALLY OPERATED DEVICES
     ABRADING TOOLS .................51/332+
     BEARINGS .......................384/135+
     BOBBIN WINDING .................242/46.5
     CABLE DRUM DRIVE OR BRAKE ......254/267
     FUSE ARMING ....................102/237+
     GOVERNOR (SEE GOVERNOR)
     LIGHT SUPPORT ..................362/384
     LUBRICATOR FORCE FEED ..........184/43
     LUBRICATOR GRAVITY FEED ........184/77
     PIPE AND TUBE CLEANERS .........15/104.14
     SWITCH .........................20/80.R
  CLASSIFYING BY FLUID SUSPENSION ...209/148
  CLUTCHES ..........................192/103.R+
  COMMINUTION APPARATUS .............241/275
  COMMINUTION PROCESS ...............241/5
  CONVEYERS AND FEEDERS
     FEEDER .........................209/915*
     PNEUMATIC ......................406/100+
     STRUCTURE, ROTARY ..............198/803.1
     STRUCTURE, THROWER .............198/638
  DISPENSING ........................222/410+
  DRYING APPARATUS ..................34/58+
  DRYING PROCESS ....................34/8
  FILM FORMERS OR SPREADERS
     COATING MACHINE ................118/56
     COATING PROCESS ................427/240
     EVAPORATORS ....................159/6.1
  FLUID TREATMENT CLEANING AND       68/147
     WASHING TEXTILE FIBERS YARNS ...68/147+
  FORMING OR CASTING
     LIQUID COMMINUTING .............425/6+
     LIQUID COMMINUTING .............425/425
     METAL APPARATUS ................164/286+
     METAL PROCESS ..................164/114+
     MOLDING APPARATUS ..............425/425
     PROCESS ........................264/310+
     PULP ...........................162/384+
     SUGAR CRYSTALS .................127/19
  GRAIN HULLERS .....................99/519
  GUN ...............................124/4+
  LUBRICATORS .......................184/70
  METER FLUID FLOW ..................73/861.29
  MUFFLERS AND SOUND FILTERS ........181/274
  NUT CRACKERS ......................99/571
  PUMPS
     GAS ROTARY .....................415
     GAS SCREW COMBINED .............415/143
     LIQUID ROTARY ..................415/203+
     MATERIAL AGITATING .............366/263+
  SCATTERERS OR SPRAYERS
     FLUID SPRAYER ..................239/214+
     FUEL BURNERS ...................239/214+
     GAS AND LIQUID CONTACT .........261/83+
     ROTARY .........................239/681+
     SPRAY FLUID ACTUATED ...........239/381
  SEPARATING COLLOIDS ...............252/349
  SEPARATOR (SEE SEPARATORS AND
     SEPARATING, CENTRIFUGAL)
  SPINNING APPARATUS ................57/76+

CENTRIFUGE .......................... D24/219

CENTRIPETAL APPARATUS
  DISPENSER ROTARY CENTRAL DISCHARGE 222/411
  EXTRACTORS WITH INWARD FLOW .......210/360.2+
  PUMPS ROTARY ......................415/120+

CEPHAELINE .......................... 546/96

CEPHALOSPORIN ....................... 540/215+
  IN DRUG ...........................514/200+

CEPHARANTHRINE ...................... 546/31

CERAMICS
  COMPOSITIONS ......................501/1+
     FLUXES .........................106/313
  FIRING APPARATUS ..................432
  FIRING PROCESSES ..................264/56+
  FORMING AND MOLDING ...............425
     UNITING COMBINED ...............264/241
  HAZARDOUS OR TOXIC WASTE588
     CONTAINMENT ....................588

CERATES ............................. 424


CEREALS ............................. 426/618+
  APPARATUS .........................99
  COMMINUTION .......................241/6+
  DESIGN ............................D01
  PRESERVATION ......................426/321+
  PUFFING, PROCESSING ...............99/323.4+

CEREMONIAL ROBE ..................... D02/739

CERESIN ............................. 208/24+

CERIUM
  ALLOYS ............................420/416
  INORGANIC COMPOUNDS ...............423
     RECOVERY .......................423/21.1+
  PYROMETALLURGY ....................75/610

CERMET .............................. 75/230+

CERTIFICATE
  DESIGN ............................D19/9
  OF DEPOSIT ........................D19/9

CESIUM
  COMPOUNDS .........................23
  PREPARATION .......................75/745
  PYROMETALLURGY ....................75/589
  RADIOACTIVE COMPOSITIONS ..........252/625

CESSPOOL ............................ 210/542
  SEWAGE PURIFYING ..................210/532.1+


CEVADINE ............................ 546/34

CHAFE
  GUARD POSITIONED BETWEEN ARTICLE
     AND BEARER .....................224/907*
  PREVENTION ON TRAWLING NET ........43/9.9

CHAFE IRON VEHICLE .................. 280/161+

CHAFING DISH ........................ D07/355


CHAIN ............................... 59/78+
  BRACELETS .........................63/4
  CABLE STOPPERS ....................114/200
  CHAIN SAW MACHINES ................83/788+
     MINING .........................299/29+
     SAW ELEMENT ....................83/830+
  DESIGN ............................D08/499+
     ORNAMENTAL .....................D11/13
  DOOR FASTENER .....................292/264
  END HOLDERS .......................24/116.R
  ENDLESS CHAIN COUPLING ............464/49
  ENDLESS CHAIN PUMPS ...............415/5
  ENDLESS EARTH BORING TOOL .........175/89+
  FABRICS ...........................245/4
  FLEXIBLE SHAFTS ...................464
  GENERAL PURPOSE ...................D08/499+
  GRATES ............................110/269+
  JEWELRY ATTACHMENTS ...............63/21+
     DESIGN .........................D11/13
  KEY RING ..........................70/457
  LINK FORMATION BY SOLDERING .......72/192
  LUBRICATORS .......................184/15.1+
  MAKING ............................59/1+
  MOLDS FOR CHAINS ..................249/57
  ORNAMENTAL ........................59/80+
     DESIGN .........................D11/13
  PROPELLERS ........................416/7+
     MARINE TYPE ....................440/95+
  REACTION, NUCLEAR .................376
  SKID CHAINS .......................152/231+
     APPLYING TOOL ..................81/15.8
     DESIGN .........................D12/154
  SPROCKET ..........................474/152+
     BICYCLE ........................D12/123
     DESIGN .........................D15/148+
     GUARDS .........................474/144+
  STIRRER, CHAIN-TYPE ...............366/607*
  STITCH SEWING MACHINE .............112/197
  TIRE ..............................152/208+
     DESIGN .........................D12/154
  TRACTION RAILWAYS .................104/172.1+
  WARP THREADS ......................28/175+
  WATCH CHAIN SNAP HOOKS ............24/905*
  WELDING ...........................59/31+
     ELECTRIC .......................219/51
  WHEEL COMBINED FOR TRACTION .......301/42
  WOOD MORTISING CUTTER .............144/72+

CHAIN SAW ........................... 30/381+


CHAIR ............................... 297
  BAGGAGE CONVERTIBLE TO ............190/8
  BARBERS ...........................297/68+
     DESIGN .........................D06/334+
  BATH ..............................4/578.1
  CABINET COMBINED ..................312/235.2+
  CHAIR LIFT ........................D12/52
  CHAISE LOUNGE .....................D06/360
  DESIGN, SEAT ......................D06/334+
  DOLL OR TOY .......................446/482
  DRY CLOSET ........................4/465
  ELEVATOR LANDING ..................187/75+
  EXERCISING ........................482/142+
  FAN COMBINED ......................416/146.R
  FOLDING ...........................297/16.1+
  FOLDING VEHICLE OCCUPANT SEATED ...280/650
  KINESITHERAPY .....................128/33+
  LADDERS ...........................182/33
  LIGHT THERMAL OR ELECTRICAL .......607/115+
     APPLICATION ....................128/376+
  LOCKS .............................70/261
  MILKING STOOL TYPE ................297/175+
  PEDESTAL DESIGN ...................D06/364
  RAILWAY CAR TYPE MAKING ...........29/16
  RAILWAY SURFACE TRACK .............238/187+
     CONCRETE PEDESTAL BAR ..........238/116
     CROSSINGS ......................246/467
     INSULATED RAIL JOINT ...........238/154+
     REVERSIBLE RAIL OR ENGLISH TYPE 238/266
     SWITCHES .......................246/453
     TWO RAIL .......................238/20
  REBAR .............................52/677+
  RECLINING .........................297/68+
  ROAD ..............................404/136
  ROUND MAKING ......................144/8
  SELF LEVELING .....................114/194
  THEATER SEAT ......................297/311+
  WHEEL CHAIR .......................280/647

CHAIR LIFT DESIGN ................... D12/52

CHAISE LOUNGE ....................... D06/360


CHALK
  CHALKBOARD CLEANING, CHALK OR
     CHALKDUST HOLDER ...............434/417
  COMPOSITION .......................106/19.R+
  CORD ..............................33/414
  CUE CHALKERS ......................473/35+
  HOLDER ............................401/88+

CHAMBER (SEE PROCESS,MACHINE
 OR DEVICE WITH WHICH ASSOCIATED)
  AUTOMATIC WEIGHERS ................177/60+
  CHEMICAL APPARATUS ................422
     ELEMENTS OR DETAILS ............422/310
  CLEANING AND LIQUID CONTACT WITH
     SOLIDS .........................134
     CLEAN ROOM VENTILATION .........454/187
  CLOSET ............................4/300+
     DISINFECTING ...................4/222+
  CONCENTRATING EVAPORATOR ..........159/12
     CLOSED .........................159/22+
  DISSOLVER-MIXER SPRAYER ...........239/267+
  DISTILLING ........................202
  DRYING AND GAS OR VAPOR CONTACT
     WITH SOLIDS ....................34
  INTERNAL RESISTANCE BRAKE .........188/266+
  LIQUID SEPARATION OR PURIFICATION .210
  MOTOR
     EXPANSIBLE CHAMBER TYPE ........91
  MUFFLERS AND SOUND FILTERS ........181/212+
  MUSICAL INSTRUMENT
     PIANO ..........................84/24+
     PIPE ORGAN .....................84/331+
     REED ORGAN .....................84/351+
  PIPE OR TUBE PRESSURE COMPENSATOR .138/30
  PNEUMATIC CONVEYOR ................406
  POT TYPE ..........................4/479+
  PRESERVING, DISINFECTING, AND
     STERILIZING ....................422/243+
  PUMPS .............................417
     EXPANSIBLE CHAMBER TYPE ........417/437+
     PRESSURE COMPENSATOR ...........417/540+
     ROTARY .........................418
  RESILIENT TIRE ....................152
  STEAMING TEXTILES .................68/5.C+
  SUBMARINE DREDGER .................37/313
  THERAPEUTIC TREATMENT WITH
     MEDICAMENTS ....................128/202.12
  TOBACCO SMOKE TREATING ............131/211+
  VOLUME OR RATE OF FLOW METER ......73/861+
     EXPANSIBLE CHAMBER TYPE ........73/232+


CHAMBRAY ............................ 139/416
  CORD STRIPE .......................139/417

CHAMFER
  BARREL CHAMFERING MACHINES ........147/13+
  BARREL CLOSURE ....................217/80
  BENCH PLANES FOR CHAMFERING WOOD ..30/484+
  COOPERING TOOLS FOR CHAMFERING ....147/42
  GEAR CHAMFERING MACHINES ..........409/8

CHAMOIS ............................. 8/94.1R+

CHANCE AND GAME APPARATUS
  BASEBALL ..........................273/93.R
  BOARD GAMES .......................273/243+
  CHANCE DEVICES ....................273/138.R+
  CHECK CONNECTOR RECIPROCATING .....194/293+
  CHECK CONNECTOR TURNING ...........194/295+
  CHECK LOCK RELEASING ..............194/247+
  GUNS MECHANICAL ...................124/33

CHANDELIER .......................... 362/405+
  DESIGN ............................D26/72
  HANGER ............................362/406+

CHANGE
  BAG FOR PHOTOGRAPHERS .............354/308+
     AUXILIARY PLATE MAGAZINE .......354/282
  COIN MACHINES .....................D20/1+
  GATE ..............................232/14
  MAKER .............................453/1+


CHANGEABLE EXHIBITOR
  AMUSEMENT CARDS AND PICTURES ......446/147+
  CARD PICTURE AND SIGN .............40/446+
  ELECTRIC ANNUNCIATORS .............340/815.1+
     SYSTEMS ........................340/286.11+
  FIGURE TOYS,FEATURES CHANGE .......446/321
  ILLUMINATED .......................362/253
  INDICATOR COMBINED ................116/307
  INFORMATION DISPLAYING ............40/446
  WITH SOUND ........................40/455

CHANNEL
  DITCH .............................405/118
     LINING .........................405/268
  ELECTRIC SIGNALS ..................340
     HIGH FREQUENCY .................333
     RADIO ..........................455
     TELEGRAPH ......................178
     TELEPHONE ......................379
  FISHWAY ...........................405/81+
  FOR ELECTRIC CONDUCTOR ............174/68.3+
  GLASS CONDITIONING ................65/346
  GUIDE .............................112/50
  IRON STRUCTURAL MEMBERS ...........52/720
  NAVIGABLE .........................405/84+
  PRESERVING CHANNEL FOR WATER       405/21+
     CONTROL ........................405/21+
  RAIL AND TIE
     FLANGE DOWN RAILROAD TIES ......238/59+
     FLANGE UP RAILROAD TIES ........238/62+
     RAIL JOINTS SPLICE BARS IN .....238/161
     RAILROAD RAILS .................238/127
     RAILROAD RAILS JOINTS ..........238/176
     TWO PART RAILROAD TIES .........238/56
  STOCK .............................428/122
     METALLIC .......................428/595
  TYPE HOLDING PRINTING .............276/37

CHANNELING MACHINE AND TOOL
  DITCHER ...........................37/347+
  MINING ............................299
     ENDLESS FLEXIBLE CUTTER ........299/82+
     MACHINE ........................299/29+
     ROTARY CUTTER ..................299/79+
  SEWING LEATHER ....................112/45
  SHOE SOLE .........................12/27+
  SHOE SOLE COMBINED WITH TRIMMING ..12/85.2


CHAPLET ............................. 164/398+

CHARACTER RECOGNITION
  COMPUTER MEANS ....................382
  RADIANT ENERGY, OPTICAL OR PRE-    382/58
     PHOTOCELL SYSTEM ...............382/58

CHARACTERS
  CALENDAR SLIDE ....................40/109
  FONT GENERATION ...................395/150+
  GENERATION ........................395/150+
  INTERCHANGEABLE SIGN ..............40/618
  MARKERS FOR CALENDAR ..............40/110
  PRINTING ..........................101
  SENSING ...........................382
     CONTROLLING DISPLAY ............345/204+
     CONTROLLING PUNCH ..............234/59+
     OPERATING TYPEWRITER ...........40/61+
     PHOTOELECTRIC ..................382/65
     TELEVISION
  TELEGRAPHIC PRINTING SYSTEM .......178/30
  TYPE CASTING ......................199

CHARCOAL
  ABSORBENTS CONTAINING .............502/416+
  BRIQUETTES ........................44/591+
  BROILERS ..........................99/385+
  DESIGN ............................D13/100
  PRODUCTION BY DISTILLATION ........201
  STOVES ............................126/25.R

CHARGE
  DISPENSING ........................222
  EXPLOSIVE
     AMMUNITION MAKING AND ..........86
     ORDNANCE PNEUMATIC COMBINED ....89/7
  FORMING
     FUEL INJECTION .................123/445+
     INTERNAL COMBUSTION ............123/434+
     INTERNAL COMBUSTION COMBINED
       GENERATING ...................123/3


CHARGE TRANSFER DEVICE
  COMPUTERS .........................364/862
  DELAY LINE ........................307/607
  LOGIC CIRCUIT .....................307/444
  MEMORY ............................365/183
  SHIFT REGISTER ....................377/57
  STRUCTURE .........................257/214+
  WAVE TRANSMISSION LINES ...........333/165


CHARGER AND CHARGING
  ARC FURNACE DEVICE ................373/60
     ARC BETWEEN SPACED ELECTRODES ..373/62+
     CHARGING OR DISCHARGING ........373/79+
  BATTERY ...........................320/2+
     DESIGN .........................D13/107+
  BIN OR TANK .......................414/288+
  ELECTRIC FURNACE ..................373
     GLASS FURNACE DEVICE ...........373/33+
     INDUCTION FURNACE DEVICE .......373/142+
     RESISTANCE FURNACE DEVICE ......373/115
  ELECTROPHOTOGRAPHIC COPIER         355/261+
     DEVELOPMENT ....................355/261+
  FILTERS, LIQUID ...................210/456
     PRECOAT ADDING MEANS ...........210/193
  FOR CAPACITOR .....................320/1
  FOR CAPACITOR .....................307/109+
  FOR NUCLEAR DOSIMETER .............320/1
  FOR NUCLEAR REACTOR ...............376/264
  FOR POCKET CHAMBER NUCLEAR ........320/1
  FURNACE TYPE ......................414/147+
     HEATING ........................110/101.R+
     METALLURGICAL ..................266/176+
  GAS GENERATORS ....................48/86.R
  LAMP BULB
     GAS ............................141/66
     GAS COMBINED ...................445
  LATENT IMAGE FORMATION ............355/216+
  LIQUID PURIFICATION ...............210/519+
     MEANS TO ADD TREATING MATERIAL .210/198.1+
     TANGENTIAL .....................210/512.1
  MAGAZINE ..........................42/87+
  METAL UNDER PRESSURE ..............164/303
  MOLDING APPARATUS FOR NONMETALS ...425/542+
     BLOCK ..........................425/258+
     GLASS ..........................65
  NUCLEAR REACTOR ...................414/146
  PNEUMATIC MOTOR RAILWAY ...........104/157+
  RECEPTACLES .......................141
     PORTABLE .......................141
  REFRIGERATION APPARATUS ...........62/292
     PROCESS ........................62/77
  SHIP ..............................414/137.1
  STILL .............................202/262+
     CLOSURE COMBINED ...............202/251
     PROCESSES ......................201/40
  TRANSFER OF IMAGE (LATENT) ........355/217
  TRANSFER OF IMAGE (TONED) .........355/271+

CHARLOTTE RUSSE ..................... 426/658+


CHARM ............................... 63/23
  JEWELRY ...........................D11/79+

CHARPY TEST ......................... 73/844

CHARRING (SEE CARBONIZING)

CHART
  APPAREL LAYOUT ....................33/12+
  ASTROLOGICAL ......................434/106+
  ASTRONOMICAL ......................434/284
  COLOR DISPLAY .....................434/98+
  EDUCATIONAL .......................434/430
  HOLDER FOR MAP OR CHART ...........40/904*
  LIGHT RAY TYPE ....................33/268
  MENSTRUATION ......................40/109
  MUSIC .............................84/471.R+
  RECORDER ..........................D10/46

CHASE
  GEM SETTING .......................63/26+
  PRINTING ..........................101/391
     BED AND PLATEN SHIFTING ........101/63+
     SECURING OR MOUNTING MEANS .....101/390

CHASERS ............................. 408/215+
  TYPE SETTING ......................276/38+

CHASING MILL ........................ 241/107+
  BALL TYPE
     FRICTIONAL DRIVE ...............241/103+
     LOOSE BALL .....................241/173+


CHASSIS
  AMPLIFIER .........................330/65+
  ELECTRICAL DEVICES ................361/679+
     RADIO PARTS TYPE ...............361/814
  RADIO SYSTEM ......................455/347+
  TELEVISION ........................358/254+
  VEHICLE ...........................280/781+
     OCCUPANT PROPELLED TYPE ........280/281.1+

CHATELAINE
  BAG CASE OR FRAME CARRIER .........224/268
  SAFETY HOOKS ......................24/4

CHECK
  BANK ..............................283/58
     DESIGN .........................D19/11
  CASH REGISTERS
     CHECK EMPLOYING OR CONTROLLED ..235/17+
     PRINTING CHECKS ................235/3
  COIN TYPE .........................40/27.5
  CONTROLLED APPARATUS ..............194
     CASH REGISTERS .................235/3
     CEREAL PUFFER ..................99/323.8
     DISPENSERS .....................222/2
     LOCK RELEASING SLOTS ...........194/247+
     MOTION PICTURE MACHINE .........352/104
     SELF PHOTOGRAPH ................354/76+
     TELEPHONE SYSTEMS ..............379/143+
     VOTING MACHINES ................235/53
     WEIGHERS .......................177/125
     WORKMENS TIME RECORDER .........346
  DOOR ..............................16/82+
     CLOSER COMBINED ................16/49+
     DESIGN .........................D08/330+
  GUN BREACH GAS ....................89/26
  GUN RECOIL ........................89/42.1+
  HARNESS UNDERCHECKS ...............54/57
  LABELS TAGS AND ...................283/81
  LABELS, TAGS, DESIGN ..............D20/22+
  PROTECTORS
     EMBOSSING ......................101/24
     FRAUD PREVENTING COATING .......427/7
  WRITER MACHINES ...................D18/5

CHECK-OUT COUNTER ................... 186/59+


CHECKBOOK COVER DESIGN .............. D19/26+

CHECKER BRICK ....................... 165/9.1+

CHECKERS ............................ D21/53
  GAME BOARD DESIGN .................D21/24

CHECKHOOKS .......................... 54/61+

CHECKING AND UNCHECKING DEVICE ...... 54/70
  UNDERCHECKS .......................54/57

CHECKING WATERMARKS ................. 356/432+

CHECKOUT COUNTER .................... D06/396+

CHECKREINS .......................... 54/16+

CHEEK PLATE RAILWAY DRAFT ........... 213/54+


CHEESE
  COMPOSITIONS AND PROCESSES ........426/582+
  CUTTER ............................83
  CUTTER AND EXPRESSER ..............425/308
  DESIGN ............................D01
  MAKING APPARATUS ..................99/452+
  PACKAGING .........................426/392+
  PRESERVATION ......................426/330.2
  PRESSES ...........................10
  TEXTILE
     FLUID TREATMENT ................8/155.2
     PACKAGES .......................242/159+
  TREATING APPARATUS ................99/452+

CHEESECLOTH ......................... 139/426.R

CHELATE
  ALUMINUM CONTAINING ...............556/175
  CHELATION ION EXCHANGE ............423/DIG.14
  DETERGENTS HAVING AGENT ...........252/DIG.11
  DRUG COMPOSITIONS .................424/DIG.6
  FOOD OR EDIBLE MATERIAL ...........426/271
  HEAVY METALS CONTAINING ...........556/1+
  PRINTING DYE WITH METAL CHELATING  8/452
     GROUP ..........................8/452
  TOBACCO SMOKE SEPARATOR OR TREATER 131/334

CHELIDAMIC ACID ..................... 546/299

CHEMICAL MODIFICATION,PROTEIN ....... 530/402

CHEMICAL REACTION HEAT PRODUCERS
  IRREVERSIBLE REACTION .............44/250+
  READILY REVERSIBLE REACTION .......252/70


CHEMILUMINESCENT .................... 252/700
  LIGHTING ..........................362/34
  TESTS INVOLVING ...................436/172


CHEMISTRY & CHEMICAL SEE PARTICULAR   422
 COMPOUND, COMPOSITION, OR ART ......422
  ANALYTICAL AND ANALYTICAL CONTROL  436/43+
     METHODS ........................436/43+
  APPARATUS .........................422/44+
  CARBON COMPOUNDS ..................260
  CARBON COMPOUNDS ..................560
  CHEMICAL COMPOSITION
     CROSSLINKING ...................252/183.11+
     CURING .........................252/182.11+
     HARDENING ......................252/182.11+
     INTERACTIVE ....................252/182.11+
     NON-INTERACTIVE ................252/182.11+
     VULCANIZING ....................252/182.11+
  CHEMICAL MANUFACTURE, MISC ........156
  CHEMICAL OXYGEN DEMAND TESTS, COD .436/62
  CHEMICAL SYMBOL CHARACTER .........40/900*
  CLASSIFYING, SEPARATING, &
     ASSORTING SOLIDS ...............209
  CLEANING & LIQUID CONTACT WITH
     SOLIDS .........................134/1+
     APPARATUS ......................134/42+
  COATING APPARATUS .................118
  COATING PROCESSES .................427
     PRINTING .......................101
  COOLING BY CHEMICAL REACTION ......62/4
  DISTILLATION
     APPARATUS ......................202
     SEPARATORY PROCESSES ...........203
     THERMOLYTIC PROCESSES ..........201
  DYESTUFFS .........................8
  ELECTRICAL CURRENT PRODUCING
     APPARATUS, PRODUCT & PROCESS ...429
  ELECTRICAL RADIANT OR WAVE ENERGY .204
  FERMENTATION ......................435
  FERTILIZERS .......................71
  FOODSTUFFS ........................99
  INORGANIC .........................423
  MEASURING INSTRUMENT ..............D10/81
  METALLURGICAL .....................75
     REACTIONS ......................376
  MODIFICATION OF SYNTHETIC RESINS OR525
     NATURAL RUBBERS ................525
  MODIFICATION OF TEXTILES & FIBERS .8/115.51+
     FLUID TREATING APPARATUS .......68
     MANIPULATIVE FLUID TREATMENT ...8/147+
  PHOTOGRAPHIC CHEMISTRY, PROCESSES &430
     PRODUCTS .......................430
  PHYSICAL PROCESSES ................23/293.R+
  REFRIGERATION .....................62/4
  STERILIZERS, REFRIGERATION         62/78
     COMBINED .......................62/78
  SYNTHETIC RESINS (SEE SYNTHETIC    520/1+
     RESIN OR NATURAL RUBBER) .......520/1+
  TEACHING ..........................434/298

CHEMOTHERAPY DRUGS
  5-FLUROURACIL .....................544/313

CHENDEOXYCHOLIC ACID ................ 552/551

CHENILLE ............................ 223/45
  MISC  MANUFACTURE .................28/144
  SPINNING TWISTING TWINING
     APPARATUS ......................57/24
     STRAND STRUCTURE ...............57/203
  TUFTING SEWING MACHINE ............112/80.1+
  WOVEN PILE FABRICS ................139/393+
     STRANDS ........................139/395

CHERRY SEEDER ....................... 30/113.1+

CHESS PIECES ........................ D21/52

CHEST (SEE BOX)
  CEDAR .............................206/278.1
  MEDICINE ..........................206/828*
  PROTECTOR .........................2/92
  TOOL ..............................206/349+
  WIND ..............................84/54
  WOODWORKING TOOL AND WORKBENCH
     COMBINED .......................144/285

CHEST OF DRAWERS .................... D06/432

CHEVIOT ............................. 26/19+


CHEVRON ............................. 2/246
  BADGE .............................40/1.5+

CHEWING GUM ......................... 426/3+
  PACKAGE ...........................206/800*
  TOBACCO COMBINED ..................131/347+

CHICKEN SEE FOWL

CHIFFON, FOAMABLE EDIBLE MATERIAL ... 426/571

CHIFFONIERS, TRUNKS ................. 190/19

CHILDPROOF BOTTLE CLOSURES .......... 215/201+

CHILEAN TYPE MILL ................... 241/107+

CHILL
  BRAKE SHOES .......................188/260
  FASTENER BEDSTEAD .................5/289
  METAL FOUNDING ....................164/371+
     CHILLING IRON PROCESSES ........164/127
     CONSUMABLE .....................164/357
     PATTERNS CHILL SUPPORTING ......164/230
     SAND MOLD OR CORE HAVING .......164/352+
  STATIC MOLD HAVING ................249/111