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:


CHIME
  BELLS .............................84/406+
  CLOCKS ............................368/273
  CLOCKS ............................968/217+
  ELECTRIC ..........................340/392+
  MUSICAL ...........................84/402+
     DESIGN .........................D17/22
     ELECTRIC TONE TYPE .............84/600+
  SIGNAL ............................116/141

CHIMNEY
  BUILDING FLUE HEATERS .............454/43
  CAP, MASONRY ......................52/244
  CAP, VENTILATING ..................454/4+
  CLEANING ..........................134/1+
     SWEEP OR BRUSH .................15/162+
  LAMP CHIMNEY LANTERN ..............362/180
     CHIMNEY ELEMENT ................362/312+
     CHIMNEY ELEMENT DESIGN .........D26/118
  MASONRY SMOKE FLUE ................52/245+
  STATIC MOLD FOR MAKING ............249/17
  VENTILATION .......................454/1+
     DESIGN .........................D23/374

CHIN
  REST
     FIREARM STOCKS .................42/71.1+
     VIOLIN .........................84/279
     VIOLIN COMBINED WITH SUPPORT ...84/278
  STRAP
     HATS ...........................132/58
     SURGICAL .......................602/902*
  SUPPORT
     CORPSE .........................27/25.1
     SURGICAL .......................602/902*

CHINA OIL ........................... 554/1+
  COMPOSITIONS ......................106/244+
     SYNTHETIC RESIN OR NATURAL RUBBER CTG (SEE SYNTHETIC
       RESIN OR NATURAL RUBBER)


CHINAWARE ........................... D07/500+
  DISPLAY STAND .....................D06/512+
  VASE ..............................D11/143

CHINTZ .............................. 139/426.R

CHIP
  BREAKER ...........................144/243+
     CUTTING TOOL WITH ..............407/2+
  CUTTING ...........................83/906*
  MAKING
     COMMINUTING TYPE ...............241/83+
     SLICER TYPE ....................144/162.R+
  POKER .............................40/27.5
     DESIGN .........................D21/53

CHIROPODY
  BANDAGES ..........................602/67
     KINESITHERAPY ..................128/33
  PEDICURING INSTRUMENT .............132/73+
  SHIELDS ...........................128/882

CHISEL
  COLD ..............................30/168
  DESIGN ............................D08/47
  DOVETAIL ..........................144/88
  MORTISING .........................144/67+
  SAWTOOTH CUTTING MACHINE ..........76/28
  STONEWORKING ......................125/41
  TENONING ..........................144/202
  WOOD TURNING ......................142/42+
     PATTERN GUIDE COMBINED .........142/21
  WOODWORKING IMPLEMENT .............30/167+

CHITIN .............................. 536/20


CHLORACETIC ACID .................... 562/602

CHLORAL ............................. 568/495+
  HYDRATE ...........................568/844

CHLORAMINE .......................... 423/383

CHLORAMPHENICOL ..................... 564/213

CHLORANIL ........................... 552/308

CHLORATE ............................ 423/475
  ELECTROLYTIC SYNTHESIS ............204/95
     PER COMPOUNDS ..................204/82+
  OXIDIZING COMPOSITIONS ............252/186.1+

CHLORAZENE CHLORAMINE  T ............ 562/837

CHLORHYDRINS ........................ 568/841+
  HYDROLYSIS OF .....................568/859


CHLORIDE
  BINARY HALIDES INORGANIC ..........423/462
  BIOCIDES CONTAINING ...............424
  DISSOLVER, SODIUM CHLORIDE &       422/902*
     POTASSIUM CHLORIDE .............422/902*
  HALOCARBONS .......................570/101+
  HAZARDOUS OR TOXIC WASTE588
     DESTRUCTION OR CONTAINMENT .....588
  HYDROCHLORIC ACID .................423/481+
  ORGANIC ACID HALIDES ..............562/800+
  OXIDIZING COMPOSITIONS ............252/186.1
  SALTS INORGANIC ...................423/462+
  SULFUR ............................423/462

CHLORINATION
  HYDROCARBON .......................570/101+
  WATER PURIFICATION ................210/198.1+
     PROCESSES ......................210/754+

CHLORINE ............................ 423/500
  BIOCIDES CONTAINING ...............424/661
  BLEACHING WITH ....................8/101+
     ELECTROLYTIC ...................204/133
  ELECTROLYTIC SYNTHESIS ............204/128
  FEEDER ............................137/87+

CHLORINE DI,-MONOXIDE OXIDIZING
 COMPOSITION ........................252/187.21

CHLOROCARBONIC ACID ESTERS .......... 558/280+

CHLOROFORM .......................... 570/181
  PREPARATION FROM ACYCLIC HALIDES ..570/101+

CHLOROPHENOLS ....................... 568/774+


CHLOROPHYLL ......................... 540/145

CHLOROPRENE ......................... 570/189
  PREPARATION .......................570/216
  SOLID POLYMERS (SEE SYNTHETIC RESIN
     OR NATURAL RUBBER)

CHLORPHENIRAMINE, IN DRUG ........... 514/357

CHOCK
  BOAT SUPPORTS .....................114/381
  DESIGN ............................D12/217
  RAILWAY CAR STOPS .................104/257+
     BRAKE TYPE .....................188/36+
  SHIP SPAR .........................114/101
  VEHICLE FENDER COMBINED ...........293/7
  WHEEL ON GROUND ...................188/32

CHOCOLATE ........................... 426/631+
  CONFECTIONERY CONTAINING ..........426/631+
  MOLDING ...........................425
  REFINER ...........................241

CHOKE
  COIL ..............................336
  FIREARM BARREL ....................42/79
  INPUT FILTER ......................333/181
  PLUG ..............................184/52
  TUBE
     HAVING PLURALITY OF LEAVES .....261/DIG.58
     INTERCHANGEABLE ................261/DIG.57
     LEAVES FLEXIBLE ................261/DIG.59
     LONGITUDUNALLY RECIPROCATING
       ALONG AIR PASSAGE ............261/DIG.61
       HAVING MOVABLE PARTS .........261/DIG.62
       SUCTION OPERATED .............261/DIG.64
       THROTTLE-OPERATED ............261/DIG.63


CHOLANIC ACID ....................... 552/548

CHOLECALCIFEROL ..................... 552/653

CHOLECALCIPHEROL, IN DRUG ........... 514/167

CHOLESTEROL COMPOUNDS ............... 552/544+
  CHOLESTEROL, LIPIDS, TRIGLYCERIDES 436/71

CHOLIC ACID ......................... 552/549

CHOLINE ............................. 564/293

CHOLINE ACETATE ..................... 560/253

CHOPPER
  CORNSTALK TYPE ....................56/60+
  COTTON CHOPPER PLOW ...............172
     CHOPPER HEADS ..................172/518+
  DC TO AC ..........................363/124+
  FOOD ..............................241
     BLOCK OR BOARD .................269/289.R+
  MEAT TENDERIZER ...................452/147
  STALK .............................56/500+

CHOPPING
  BLOCKS AND BOARDS .................269/289.R+


CHORD
  PLAYED BY SINGLE KEY OF KEYBOARD ..84/443+
  SELECTOR FOR ZITHERS ..............84/286+

CHRISTMAS TREE
  CANDLE HOLDERS ....................431/296
  CONTAINER OR WRAPPER FOR ..........493/956*
  DECORATIVE LIGHTS .................362/249+
     DESIGN .........................D11/118+
  DESIGN ............................D11/118
  HOLDER ............................248/511+
     DESIGN .........................D11/130.1
     FLUORESCENT ....................250/462.1
  IMITATION .........................428/7+
  LAMPS .............................D26/25+
  LIGHT STRING ......................D26/25
  ORNAMENTS .........................428/7+
     DESIGN .........................D29/1
  SERIES LAMP SYSTEM ................315/185.R+

CHROMANES ........................... 549/398+

CHROMATE PROCESSES
  METAL COATING .....................148/264+
  PHOTOGRAPHIC ......................430/289

CHROMATOGRAPHY ...................... 73/19.2+
  GAS SEPARATION ....................96/101+
     GAS CONTENT OF LIQUID OR SOLID .73/19.2+
     PROCESS ........................95/82+
     TESTING ........................73/23.35+
  HYDROCARBON PURIFICATION BY .......585/825
  LIQUID ............................210/656+
     GEL OR LIQUID-LIQUID ...........210/635
     TESTING ........................73/61.52+
  PHYSICAL RECOVERY METHODS .........435/803*
  TESTING OF GAS CONTENT ............73/19.1


CHROMIUM
  ALLOYS (NON-FERROUS) ..............420/428
  ALUM ..............................423/544+
  CHROMATES .........................423/592+
     ELECTROLYTIC SYNTHESIS .........204/89
  FERRO .............................420/34+
  ORGANIC COMPOUNDS .................556/57+
  OXID PIGMENTS .....................106/453+
  OXIDES AND HYDROXIDES .............423/607
     ELECTROLYTIC SYNTHESIS .........204/97
  PLATING
     ELECTROLYTIC ...................205/283+
     ELECTROLYTIC PLURAL LAYERS .....205/178+
     METAL STOCK ....................428/666
  PYROMETALLURGY ....................75/623
     ELECTROLYTIC ...................204/105.R

CHROMOSCOPES
  COLOR PICTURE VIEWER ..............359/629+
  COLORIMETER .......................356/402+

CHROMOSOME MULTIPLICATION, 47/DIG.1
 CROSS-BREEDING .....................47/DIG.1

CHRONOGRAPH
  ELECTRICAL OR ELECTRONIC ..........368/114
     WITH SPEED DETERMINATION .......324/178+
  RECORDER ..........................346
  WATCHES ...........................368/101
  WATCHES ...........................968/835+

CHRONOMETER
  STRUCTURE .........................368/62+
  TESTING ...........................73/6

CHRONOSCOPE
  ELECTRIC ..........................368/107


CHRYSANTHEMIC ACID, IN DRUG ......... 514/572
  ANNULAR FOR WOOD TURNING ..........142/52
  COUNTERPOISED .....................142/51
  ELECTROMAGNETIC HOLDERS ...........335/289+
  HOLLOW MANDREL GUIDE ..............142/54
  KEY ...............................81/16
  NAILING MACHINE ...................227/149

CHUCK SEE SOCKET .................... 279

CHURCH BELL ......................... 116/148+
  ELECTRICALLY SIMULATED ............340/398

CHURN ............................... 366
  AGITATOR TYPE .....................366
  BUTTERWORKER COMBINED .............99/452+
  DESIGN ............................D07/371


CHUTE (SEE CONVEYER) ................ 193
  AMUSEMENT RAILWAY .................104/69
  ASSORTING
     GASEOUS SUSPENSION .............209/149
     GAUGING APERTURES ..............209/682
     HOUSEHOLD SIFTING BIN ..........209/375
     LIQUID SUSPENSION RECIPROCATING 209/196
     LIQUID SUSPENSION STATIONARY ...209/202
     MANUAL .........................209/702+
     ROLLING INCLINE ................209/69
  BILLIARD RACK, POCKET AND .........473/22+
  CABINET
     SHOWCASE TYPE ..................312/124
     STOCK AND SAMPLE ...............312/121
  CAN MAKING MACHINE BODY FEEDING ...413/70+
  CARD MAGAZINE .....................312/60
  CONVEYER HAVING GRAVITY SECTION ...198/523+
  DEPOSIT AND COLLECTION RECEPTACLE .232/44+
  DUMPING VEHICLE ...................298/7
  FIRE ESCAPE .......................182/48+
  FRUIT GATHERER ....................56/328.1+
  FURNACE FUEL FEEDER ...............110/116+
     FIXED DETACHING MEMBER .........56/340
     POLE TYPE PIVOTED JAW ..........56/334
     POLE TYPE PIVOTED KNIFE ........56/336
  HOPPER RR CAR BRIDGE FOR SIDE .....105/252
  HOPPER RR CAR CENTER ..............105/249
  MORTAR MIXING DISCHARGING .........366/68
  NAIL ETC FEEDER INCLINED ..........470/180
  PLANTER VIBRATING .................111/76
  PLURAL DESTINATION CONVEYOR & .....198/359
  SHOWCASE ..........................312/124
     STOCK AND SAMPLE ...............312/121
  SPINDLE LATHE AUTOMATIC FEED ......142/20
  STRATIFIERS LIQUID TREATMENT ......209/458
     RECIPROCATING ..................209/437+
     RECIPROCATING ROTATING .........209/435+
     ROTATING .......................209/444
     SPIRAL .........................209/434
  STRATIFIERS MOVABLE BED ...........209/479+
  STRATIFIERS PNEUMATIC TREATMENT ...209/477
     MOVABLE BED ....................209/471+
  TEXTILE LIQUID TREATING 68/178
     RECEPTACLE CONDITIONING ........68/178
     PLEATING IN RECEPTACLE .........68/177
  TYPESETTING CONVERGING ............276/20+
  VEHICLE BODY ENDGATE COMBINED .....296/61
  WOODEN SILO .......................52/195

CIBANITE T M (AMINOPLAST) ........... 528/230


CIGAR AND CIGARETTE ................. 131
  ASHTRAY ...........................D27/102+
  BANDS FOR .........................D20/22+
  CASE ..............................206/242+
     COMBINATION ....................206/236+
     DESIGN .........................D27/186+
  CUTTER ............................30/109+
     APPLIANCE COMBINED .............131/248+
     CIGARETTE CASE COMBINED ........206/238+
     DESIGN .........................D27/195
     END CUTTER .....................83
     MACHINE ........................83/931*
  DESIGN ............................D27/101+
  EXTINGUISHER ......................131/256
  FILTER END ........................131/331+
  FILTER FOR ........................131/331+
     ASH TRAY COMBINED ..............131/234
     CIGARETTE CASE COMBINED ........206/236+
     DISPENSING CASE COMBINED .......206/236+
     ELECTRIC HEATING COIL ..........219/260+
     END CUTTER COMBINED ............131/249
     MAGAZINE CIGARETTE DISPENSER
       COMBINED .....................221/136+
     MATCHES ........................44/507+
     PART OF CIGAR OR CIGARETTE .....131/351
     SMOKING DEVICE COMBINED ........131/185
  HOLDER ............................206/242
     DESIGN .........................D27/183+
  LIGHTER ...........................D27/141+
     LIQUID GAS CARTRIDGE FOR .......D23/202
  MACHINES ..........................D20/1+
  MAGAZINE TYPE CABINET .............312/72+
  MAKING ............................131/280+
     TURNING CIGARETTES END FOR END .198/952*
  PACKAGES ..........................206/242+
     MANUFACTURERS CONTAINER ........493/910*
     MATCHES COMBINED ...............206/85+
  PACKAGING .........................53/148+
  PAPERS CONTAINER ..................206/237
  POCKET LIGHTER
     BUTANE .........................431/130+
     BUTANE .........................431/254
     CATALYTIC ......................431/147
     FRICTIONAL, CHEMICAL, PERCUSSIVE431/267+
     WITH COVER .....................431/144+
     WITH COVER .....................431/129+
  PROTECTIVE COVER FOR PACKS ........D27/186+
  SMOKERS TOOLS .....................D27/194+
  SNUFFER ...........................D27/136
  VENDING MACHINE ...................221
     COIN OPERATED ..................194
     DESIGN .........................D20/1+
     WITH IGNITING MEANS ............221/136+


CIMETIDINE .......................... 548/336.5+

CINCHONA ALKALOIDS .................. 546/134+

CINCHONINE .......................... 546/134

CINCHOPHEN .......................... 546/170

CINE FILM ........................... 430/934*

CINEMA SEE MOTION PICTURE

CINEMATOGRAPHY ...................... D16

CINEOL .............................. 549/397

CINERARY URNS ....................... 27/1


CIRCUIT (SEE SYSTEM, ELECTRIC)
  APPLICATIONS, BATTERY .............136/293*
  BREAKER ...........................335/6+
     DESIGN .........................D13/160
     SYSTEM .........................361/1+
  CLOSER ............................20
     ANNUNCIATOR ....................340/815.28
     ARC LAMP HAVING ................314/131
     ARC LAMP SHUNT CLOSING OR CUT   314/10
       OUT ..........................314/10+
     CHANGEABLE EXHIBITER CONTROL ...40/463+
     LAMP OR ELECTRONIC TUBE
       COMBINED WITH ................315/32+
     LAMP OR ELECTRONIC TUBE SYSTEM .315/362+
  CLOSING APPARATUS .................20
  CONTROLLER (SEE SYSTEM HAVING)
     CLOCK ELECTRIC .................368/52
     CONDENSER STRUCTURE ............361/271+
     ELECTRONIC TUBE TYPE ...........328/85+
     FLASHING LIGHT ETC .............40/902*
     PHASE REGULATION ...............323/212
     REGULATORS .....................323
     RHEOSTAT OR RESISTANCE .........338
     SWITCH STRUCTURE ...............20
     TRANSFORMER ....................323/355
     TROLLEY CONDUCTOR SECTION
       SWITCHING ....................191/16+
     TUNERS .........................334
  INTERRUPTION
     ELECTRICAL SYSTEMS .............307/96+
     ELECTROLYTIC ...................361/435
     INVERTER SYSTEMS ...............363/109
     RECTIFIER SYSTEMS ..............363/108+
     REGULATOR ELECTRICAL SYSTEMS ...307/96+
     THERAPEUTIC APPARATUS ..........607/72+
  MAINTENANCE
     SIGNAL BOX TRANSMISSION ........340/292
     TELEGRAPH LINES ................178/69.R
  MAKER AND BREAKER .................20
     ANNUNCIATORS ...................340/815.28
     ARC LAMP CUTOUT OR SHUNT .......314/10+
     ARC LAMP SYSTEM ................314/131
     CHECK CONTROL TELEPHONE ........379/146+
     ELECTROMAGNETIC SWITCHING       361/139+
       SYSTEMS ......................361/139+
     KEY TELEGRAPH ..................178/101+
     LAMP OR ELECTRODE TUBE SYSTEM ..315/362
     MOTOR SYSTEM ...................318
     SWITCHBOARD HOUSING OR MOUNTING 361/601+
       DETAILS ......................361/601+
     TELEGRAPH MANIPULATING .........178/75
     TELEPHONE ......................379/414+
  PRINTED ...........................428/901*
     MANUFACTURE INCLUDING ETCHING ..156/901*
       ON ORGANIC BASE ..............156/902*
  PROTECTOR
     LIGHTNING ARRESTER .............361/117+
     METER ..........................324/110
  RETAINER AUTOMATIC TELEGRAPH
     REPEATER .......................178/72
  WORK HOLDER FOR ELECTRICAL CIRCUIT 269/903*

CIRCULAR
  KNITTING MACHINE
     INDEPENDENT NEEDLES ............66/8+
     UNITED NEEDLES .................66/79+
  LOOMS .............................139/457+
  SAW
     DRESSING AND JOINTING ..........76/48
     METAL SAWING ...................83/594
     WOOD SAWING ....................83/469+

CIRCUMCISION DEVICES ................ 606/118

CISTERN ............................. 52/169.1+
  CLEANERS ..........................15/246.5
     HOISTING BUCKET TYPE ...........294/68.22+
  MOLDS FOR .........................425/59+
  SEWAGE PURIFICATION ...............210/532.1+

CITAZINIC ACID ...................... 546/296

CITRAL .............................. 568/448

CITRIC ACID ......................... 562/584

CITRUS FRUIT
  CUTTERS ...........................30/123.5+
     MACHINES .......................99/539+
  PLANTS ............................PLT/45


CIVETONE ............................ 568/375

CLACK VALVE ......................... 251/298+

CLAM
  PROCESSING FOR FOOD ...............452/12+


CLAMP & CLAMPING DEVICE (SEE CLASP;
 FASTENER) ..........................24/455+
  ADJUSTABLE ........................403/DIG.1
  APPAREL APPARATUS .................269
  APPLIER
     HOSE CLAMP .....................81/9.3
     SURGICAL CLIP ..................29/243.56
  BINDER DEVICE RELEASABLY ENGAGING  402
     APERTURE OR NOTCH OF SHEET .....402
  BOOK OR LEAF HOLDER ...............281/45+
  BRACKET CLAMPED TO SUPPORT ........248/225.31+
  BRACKET WITH ARTICLE HOLDING CLAMP 248/316.1+
  BUILDING COMPONENTS ...............52/584
     ANCHOR OR TIE ..................52/698+
  CLASP, CLIP, OR SUPPORT CLAMP .....24/455+
     DESIGN .........................D19/65
  CLIP BOARD ........................24/67.3+
  CLOSURE FASTENER ..................292/256+
     ROD CLAMP TYPE .................292/305+
  CORD ROPE AND STRAND ANCHORS ......24/115.R+
     BRIDGE CABLE ...................14/22
     SASH CORD ......................16/205
  DENTAL IMPLEMENT ..................433/153+
     DAM ............................433/138+
  DESIGN ............................D08/72
  HOSE ..............................24/19
     APPLIERS .......................81/9.3
     WITH SUPPORT ...................248/75+
  JAR LID ...........................D09/435+
  LOCKED ............................70/19
  METAL DEFORMING APPARATUS .........72/293+
  MODERATOR STRUCTURE FOR NUCLEAR    376/458
     REACTOR ........................376/458
  PAPER FASTENER ....................24/67.R+
  PORTABLE ..........................269
  RAILWAY TRACK FASTENING ...........238/338+
  SAW SETTING .......................76/78.1+
  SCAFFOLD BINDERS ..................24/16.R+
  SHOEMAKERS ........................12/103
  STATIC MOLD .......................249/219.1
  STRAND TENSIONING .................242/149+
  SURGICAL IMPLEMENT ................606/151+
     DESIGN .........................D24/143
  TESTING STRENGTH OF SPECIMEN WITH .73/856+
  WOODWORKING .......................269


CLAMPED WORK (SEE HOLDERS)
  ABRADING MACHINE ..................51/217.R+
  BUTCHERING ........................452/194+
  CUTTING & PUNCHING SHEETS & BARS ..83
     CUTTING TABLES .................83/451+
     DRAWCUT ........................83/642+
     DRAWCUT ........................83/644+
     PIVOTED CUTTER .................83/597+
     PUNCHING OR PRICKING ...........83
     RECIPROCATING CUTTER ...........83/613+
     TABLE WITH .....................83
  DAGUERREOTYPE PLATES ..............354/2
  ENGRAVING .........................81/4
  SEWING MACHINE PRESSER ............112/235+
  SHOEMAKING ........................12
  SPECIMEN TESTING BY STRESS OR      73/856+
     STRAIN APPLICATION .............73/856+
  VEGETABLE AND MEAT CUTTING ........269
  VISES .............................269
     PIPE OR CABLE ..................269
  WIRE FABRIC MAKING ................140/51
  WOOD BENDING ......................144/269
  WOOD TURNING ......................142
  WOODWORKING .......................269
     MACHINE ........................144/278.R

CLAMSHELL BUCKET .................... 294/68.23+

CLAPPERS FOR BELLS SEE BELLS

CLARINET ............................ 84/382+


CLASP ............................... 24/455+
  CLOTHESPIN (SEE CLOTHESPIN)
     DESIGN .........................D32/61+
  CUFF HOLDER .......................24/43+
  FASTENER COMBINED .................24/326+
  FOR NUCLEAR REACTOR     376/304
     MODERATOR STRUCTURE ............376/304
  GENERAL PURPOSE ...................D08/382+
  JEWELRY ...........................D11/86+
  PEN OR POCKET .....................24/11.R+
     PEN OR PENCIL ..................D19/41+
     PROJECT-RETRACT      401/104
       MEANS ASSOCIATED .............401/104+

CLASSIFYING SOLIDS .................. 209
  CUTTING OR COMMINUTING COMBINED
     APPARATUS ......................241/68+
     CEREAL PROCESSES ...............241/9+
     FLUID APPLYING APPARATUS .......241/38+
     GAS APPLYING PROCESSES .........241/19
     LIQUID APPLYING PROCESSES ......241/20
     PROCESSES ......................241/24
     VEGETABLE AND MEAT APPARATUS ...99/510
     VEGETABLE AND MEAT PROCESSES ...426/518+
  DORR TYPE .........................209/462

CLATHRATES (SEE DEFINITION NOTE (3) . 428/402.2

CLAVIER ............................. 84/DIG.25

CLAVULANIC ACID ..................... 540/349

CLAW BAR LEVER NAIL EXTRACTOR ....... 254/25+


CLAY
  ACID ACTIVATED ....................502/81
  BURNING IN KILNS ..................264/56+
  CLEANER ...........................209
     COMMINUTING COMBINED ...........241
  COMPOSITIONS ......................501/141+
     ABRASIVE .......................51/308
     ADSORBENTS .....................502/407+
     CATALYST .......................502/80+
     CATALYST CARRIER ...............502/439+
     PORCELAIN ......................501/141+
     REFRACTORY .....................501/94+
  MOLDING AND CASTING ...............425
  PIGEON ............................273/362+
     PROJECTOR ......................124/6+
  PIPE OR TUBE ......................138/175+
  SHAPING PROCESSES .................264
     FIRING WARE COMBINED ...........264/60+
  TREATMENT .........................501/145+
     CHEMICAL .......................501/146+


CLEANER AND CLEANING (SEE CLEARER)
  ABRADING FILE .....................51/414
  ANTISMUT DEVICE COMBINED ..........101/423+
  APPLICATOR ........................15/104.1+
     MATERIAL SUPPLY COMBINED SEE
       IMPLEMENTS BELOW .............401
  ASH TRAY COMBINED WITH CLEANING
     DEVICE .........................131/232
  ATTACHMENT ........................15/246+
     CURTAIN OR SHADE ...............160/11
     ELECTRIC INSULATOR .............174/211
     ELECTRODE TIP ..................314/23+
     HAND RAKE ......................56/400.8+
     HARROW TEETH ...................172/90
     LIQUID LEVEL SIGHT GLASS .......73/324
     PRINTING APPARATUS .............101/425
     RAZOR ..........................30/41
     SOLID MATERIAL COMMINUTER
       MEMBER .......................241/166+
     TEXTILE KNITTING APPARATUS .....66/168
     TOBACCO SMOKING DEVICE .........131/184.1
     TYPE CASTING APPARATUS .........199/62
     TYPEWRITING MACHINE ............40/701+
  BAND SAW PULLEY ...................83/168
  BOILER WITH MEANS FOR .............122/379+
  BOOT AND SHOE SCRAPERS ............15/237+
  BOTTLE WASHING MACHINE ATTACHMENT .15/104.9
  BREAD AND PASTRY ..................15/3.11
  BREAD AND PASTRY ..................15/3.16
  BRUSHES FOR, DESIGN ...............D04
  BRUSHING SCRUBBING WIPING GENERAL
     CLEANING .......................15
  BURNER ............................431/121
  BURNER TIP ........................362/458
  BUTTON CLEANING ...................51/171
     GARMENT SHIELDS ................51/265
  CARCASS ...........................452/173
  CARPET ............................15/3+
     SWEEPER TYPE ...................15/41.1+
  CISTERN ...........................15/246.5
  COMB
     BRUSH MACHINE ..................15/39
     COMBINED .......................132/119
     IMPLEMENT ......................15/104.5+
  COMBUSTION MEANS ..................110/236+
  COMPOSITION
     ABRASIVE .......................51/293+
     DETERGENT ......................252/89.1+
     FLUE ...........................44/640
     LUBRICANT COMBINED .............252/11
     METAL FLUXING ..................148/23+
     SOAP ...........................252/369+
     SOAP PRODUCTS ..................252/368
  CONVEYOR ..........................198/493+
  CURRYCOMB .........................119/88
     DESIGN .........................D30/159
  DESIGN ............................D32/1+
  DISPENSER .........................222/148+
     RECEIVER INLET CLEANING
       ATTACHMENT ...................141/90
  DISTILLATION APPARATUS CARBON
     REMOVERS .......................202/241
     PROCESSES ......................201/2
  DRIVE BELT AND CHAIN ..............474/92
  EARTH BORING MEANS WITH ...........175/84
  EARTH BORING TOOL WITH ............175/313
  ELECTRIC TROLLEY HEAD .............191/62
  ELECTROLYSIS
     CLEANING OR ETCHING ............204/129.1+
     COATING WITH CLEANING OR
       ETCHING ......................205/210+
  ELECTROPHOTOGRAPHIC COPIER ........355/296+
  ELECTROSTATIC .....................15/1.51+
  ENGINE CYLINDER ...................15/104.11
  FILTER ............................210/407+
  FLUE
     BRUSH AND BROOM ................15/162+
     FLUE ATTACHED ..................15/249
     SCRAPER ........................15/242+
  FLUID HANDLING DEVICES ............137/237+
  FLUID NOZZLE ......................239/106+
  FOUNDRY APPARATUS WITH ............164/158
  FRUITS
     PROCESSES ......................426/478+
  FUR TREATMENT .....................69/23+
  GAS SEPARATOR .....................55/282+
     BY LIQUID ......................55/242+
     ELECTRICAL PRECIPITATOR ........96/28+
  GINNING SAW .......................19/64
  GLASS MFG APPARATUS ...............65/27
  GUN BORE ..........................15/104.5+
     CARTRIDGE CONTAINED ............102/442
     GUN COMBINED ...................42/95
  HARVESTING BINDER NEEDLE CLEANER ..56/448
  HAT CLEANING ......................223/23
  HEAT EXCHANGE APPARATUS ...........165/95
  HOOF ..............................168/48.1+
  IMPLEMENT .........................15/104.1+
     BRUSH BROOM OR MOP
       WITH MATERIAL SUPPLY .........401/268+
     COATED OR IMPREGNATED15/104.93
       WITH CLEANING MATERIAL .......15/104.93+
     CONTAINER, WRAPPER FOR .........493/942*
     ERASING (SEE ERASER) ...........15/424+
     MATERIAL SUPPLY COMBINED .......401
     PADLIKE, BLADELIKE OR APERTURED 401/261
       WITH MATERIAL SUPPLY .........401/261+
     POROUS PAD WITH MATERIAL
       SUPPLY .......................401/196+
     STATIONARY AND WITH
       MATERIAL SUPPLY ..............15/104.92
     STRANDED FABRIC MOP OR MOP HEAD 15/229.1+
       WITH FIXED HANDLE ............15/229.2+
       WITH PIVOTED HANDLE ..........15/229.6+
  LIQUID CONTACT
     SOLIDS APPARATUS ...............134
     TEXTILE APPARATUS ..............68
     TEXTILE PROCESSES ..............8/137+
  LIQUID HEATERS AND VAPORIZERS .....122/379+
     WATER TUBE HEATER ..............122/361
  LOOM CLEANING .....................139/1.C
  MACHINES ..........................15/3+
     LIGHTS ON ......................362/91
  MARINE HULL .......................114/222
  METAL WORKING WITH (SEE METAL
     DEBRIS) ........................29/DIG.7
     CUTTER ENGAGING CLEANER ........29/DIG.97
     ROTATING, RECIPROCATING, OR
       OSCILLATING CLEANER ..........29/DIG.98
  NOZZLE ............................239/106+
  OIL VAPORIZING APPARATUS CARBON
     REMOVERS .......................196/122
     PROCESSES ......................208/48.R
  PAPER MAKING FELT & WIRE COMBINED .162/274+
  PEN ...............................15/423
  PIANO ACTION COMBINED .............84/64
  PIPE AND TUBE (SEE APPARATUS OR PROCESS USING)
     BRUSHING MACHINES ..............15/88
     IMPLEMENTS .....................15/104.3+
     LIQUID CONTACTING APPARATUS ....134/166.R+
     PROCESSES ......................134/1+
     TOBACCO SMOKERS ................131/243+
  PISTON RING GROOVE ................15/104.12
  RAILWAY
     SNOWPLOWS ......................37/214+
     SWITCH POINT ...................246/444
     TRACK ..........................104/279+
     TRACK SWEEPERS .................15/54+
  RECEPTACLE
     BRUSH AND BROOM IMPLEMENT ......15/164+
     BRUSHING MACHINES ..............15/56+
     LIQUID CONTACTING ..............134
     WIPER IMPLEMENT ................15/211+
  REFRIGERATION APPARATUS ...........62/303
  SAND BLAST NOZZLE COMBINED ........291/12
  SCALE REMOVING FROM METAL .........29/81.1+
  SCOURING WITH ABRADANT ............51/16+
  SOLIDS CLEANING APPARATUS CLEANER  34/85
     COMBINED .......................34/85
  SOUND RECORD ......................15
  SPARK PLUG ........................15/104.11
  STEAM BOILERS .....................122/379+
  STOVE FLUE ........................126/16
  STRATIFIER ........................209/487
  STREET
     AIR BLAST OR SUCTION ...........15/300.1+
     FLUSHERS .......................239/159+
     SWEEPERS .......................15/78+
  TEETH .............................433/216
  TEXTILE FIBER WORKING COMBINED ....19/262
     ROLL CLEANING ..................15/256.51
  TOBACCO SMOKING DEVICE ............131/243+
  TOBACCO TREATMENT
     FLUIDS OR FLUENT MATERIAL ......131/300+
     LEAF ...........................131/325
     STEMMING AND CLEANING ..........131/315+
  TOOL DRIVING OR IMPACTING COMBINED 173/197+
     AUTOMATIC CONTROL ..............173/3
  TRACK SANDER DELIVERY PIPE ........291/42+
  VACUUM ............................15/300.1+
     NOZZLES ........................15/415.1+
     PROCESSES ......................134/21
     TOOL DRIVING MOTOR FLUID CAUSED 173/60
  VALVE .............................137/244+
  VEGETABLES
     PROCESSES ......................426/478+
  VISCERA ...........................452/123
  WASHING-DRYING MACHINES ...........D32/6+
  WELDING APPARATUS COMBINED ........228/18
  WELL ..............................166/170+
     PROCESSES ......................166/311+
     SCREEN WITH WASHING POINT OR
       SHOE .........................166/157+
  WHEEL SCRAPER VEHICLE ATTACHED ....280/855+
  WOOD SAW ..........................83/169

CLEARANCE REDUCTION
  COMPRESSOR ........................92/60.5
     REGULATOR ......................417/274+
  INTERNAL COMBUSTION ENGINE ........123/48.R

CLEARER (SEE CLEANER)
  DIGGERS POTATO ....................171/114+
  FORK ..............................294/50+
  HARVESTERS ........................56/314+
  HAT MAKING ........................223/11
  PLOWS .............................172/606+
  PROPELLER SCREW ...................440/73
  RAILWAY TRACK .....................104/279+
  RAKES
     HAND ...........................56/400.8+
     HORSE DRAWN ....................56/395
  ROADWAY SNOW EXCAVATORS ...........37/196+
  SIFTERS ...........................209/379+
  TEXTILE MACHINERY
     DRAWING ROLL ...................19/258+
     LOOM SHUTTLE ...................139/261+
     SPINNING .......................57/300+
     WARP BEAMING ...................28/173


CLEAT
  INSULATOR ELECTRICAL ..............174/157
     BRACKET FOR ....................248/67.5
  SHIP ..............................114/218
  SHOE SOLE EDGE GRIPPING ...........36/7.7
  SHOE SPIKE OR .....................D02/962
  SLIDING CAR DOOR ..................49/472
  TRACTION FOR WHEELS ...............301/43+

CLEAVER ............................. 30/308

CLEPSYDRAS .......................... 968/805+

CLERESTORY .......................... 52/18

CLEVIS .............................. 403/157
  BALL SOCKET .......................403/142
  COUPLER ...........................403/302
  HOIST LINE
  INSULATORS ........................174/207
  LINKS .............................59/86+
  THILL COUPLINGS ...................278/52+

CLEW ................................ 114/115

CLICKER ............................. 242/304


CLIMBER
  ARM OR HAND TYPE EXERCISE .........482/37
  MOUNTAIN CLIMBING AIDS ............248/925*
  PLANTS
     ROSE ...........................PLT/2+
     VINE ...........................PLT/54.1+
  PLAYGROUND APPARATUS ..............482/35+
     DESIGN .........................D21/242+
  POLE POST OR ROPE .................182/133+
  STAIR EXERCISE ....................482/52
  TIRE ATTACHED SURFACE RAIL CLIMBER 301/90
  TOY FIGURE ........................446/314+

CLINCHER RIM ........................ 152/382+

CLINOMETER .......................... 33/365+

CLIP
  APPLIER ...........................29/243.5+
     SURGICAL .......................29/243.56
  BOTTLE ATTACHMENT .................215/101
  DESIGN
     APPAREL ........................D11/200+
     HAIR ...........................D28/39+
     JEWELRY ........................D11/40+
     PAPER, PEN, PENCIL .............D19/56
  INSERTERS .........................606/139+
  LEAF SPRING .......................267/53
  MAKING AND JOINING
     FABRIC WIRE ....................29/243.56
     SPRING HEAD ....................29/172
     WIRE ...........................140/82+
  NOSE ANIMAL .......................119/824+
  PAPER .............................24/455+
  PAPER FASTENER ....................D19/65
  PEDAL CRANK COMBINED WITH SHOE     74/594.6
     TYPE ...........................74/594.6
  PEN AND PENCIL ....................24/10.R+
     DESIGN .........................D19/56
     PROJECT-RETRACT MEANS ASSOCIATED401/104+
  RAFTERS AND .......................33/DIG.16
  RAIL FASTENINGS ...................238/378
  STRUCTURAL UNIT FASTENERS .........403
  SURGICAL ..........................606/151+
  WIRE FABRIC .......................245/3


CLIPPERS
  CLIP APPLYING .....................29/243.5+
  CLOTH FINISHING CUTTERS ...........26/7+
  FUR HAIR REMOVING .................69/25
  HAIR ..............................D28/52+
  HAND MANIPULATED CUTTERS ..........30
  HARVESTERS ........................56
  HAT MAKING ........................223/19
  NAILS .............................D28/60+
  WITH HAIR CATCHING ................30/124+

CLOAK ............................... 2