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:


COUPON
  ENVELOPE ..........................229/70
  TALLIES ...........................283/51+

COURSE FOR ANIMALS .................. 119/15.1+

COVER (SEE CLOSURE; COVERING; GUARD;
 LID; AND NOTES TO) .................150/154
  AMPOULE STEM ......................81/3.4+
  ARTICLE CARRIER (VEHICLE ATTACHED) 224/42.2
     ROOF OR TRUNK ..................224/328
  AUTOMOBILE ........................150/166
     ENGINE ATTACHED DRIP CATCHER
       TYPE .........................180/69.1
  BALL HITCH ........................280/507
  BARREL ............................217/81
  BASEBALL FIELD ....................273/27
  BED (SHEET, BLANKET,
     BEDSPREAD, ETC.) ...............5/482+
     ELECTRIC BLANKET TYPE ..........219/212
  BEVERAGE CONTAINER ................428
     INSULATING JACKET TYPE .........220/903*
  BICYCLE ...........................150/167
  BOAT ..............................114/361
  BODY ENTERING CONDUIT .............604/192+
  BODY TREATING INSERT ..............604/287
  BOILER ............................122/494
  BOOK ..............................283/64+
     DESIGN OF COVER ................D19/26+
     INDICIA ON COVER ...............283/64
     REMOVABLE BOOK .................281/19.1+
  BORING BIT (EARTH PENETRATING) ....175/307
  BROOM OR BRUSH ....................15/247
  BUILDING (MATERIALS COVER, GROUND  52/3
     ANCHORED, ETC.) ................52/3
  BUTTON ............................24/113.R
  CAMERA ............................206/316.2
  CAN, BEVERAGE .....................428
     INSULATING JACKET TYPE .........220/903*
  CAR ...............................150/166
  CHRISTMAS TREE ....................206/423
  CLOTHESLINE .......................211/119.18
  COFFIN ............................27/19
  CORSET ............................2/110
  CUTLERY ...........................30/326
  CUTTING BIT (EARTH PENETRATING) ...175/307
  CUTTING BLADE .....................30/504
  DENTISTS ENGINE HAND PIECE
     (DURING USE) ...................433/116
  ENGINE OR MOTOR ...................150/157
     ENGINE ATTACHED DRIP CATCHER
       TYPE .........................180/69.1
  FILTER TYPE COVER .................55/490+
     FOR LIQUID PURIFICATION ........210/500.1+
  FISHING ROD OR REEL ...............43/26
  FLOOR (CARPET) ....................428/85+
  FLOWER POT (DECORATIVE WRAPPER) ...47/72
     FAUCET .........................150/158
     FLUID HANDLING DEVICE ..........150/156
  FLUSH CLOSET (TOILET) LID .........4/242.1
  FLUSH CLOSET (TOILET) SEAT COVER ..4/245.1+
  FURNITURE .........................150/158
     ARMREST ........................297/227+
     BED (SHEET, BLANKET, BEDSPREAD, 5/482+
       ETC.) ........................5/482+
       ELECTRIC BLANKET TYPE ........219/212
     BILLIARD AND POOL TABLE ........473/34
     CHAIR AND SEAT .................297/219.1+
     DESIGN OF COVER ................D06/617+
     TABLE ..........................108/90
  GARMENT HANGER ....................223/98
  GOLF BAG OR CART ..................150/159
  GOLF CLUB .........................150/160
  GUN ...............................206/317
     BARREL .........................42/96
     SIGHT ..........................33/244
     STOCK ..........................42/74
  HAND GRIP .........................16/DIG.12
  HAND TOOL .........................150/161
  HANDLE OF OPERATING MECHANISM .....74/558.5
  HANDLEBAR .........................74/551.9
  HEADLIGHT .........................150/166
  HINGE .............................16/250+
  HITCH BALL ........................280/507
  HOT WATER BAG .....................383/901*
     THERAPEUTIC STRUCTURE ..........607/114
  HYDRANT ...........................137/296
  ICE BAG ...........................383/901*
  ICE SKATE .........................206/315.1
     BOOT ATTACHED COVER ............280/811
     SCABBARD .......................280/825
  IRONING BOARD .....................38/140
  KEYHOLE ...........................70/455
  KNOB ON A CLOSURE FASTENER ........292/DIG.2
  LAMP SHADE ........................362/351
  LOCK ..............................70/55
  LUGGAGE ...........................190/26
  MACHINE MECHANISM GUARD TYPE ......74/608+
  MOTOR .............................150/157
     ENGINE ATTACHED DRIP CATCHER
       TYPE .........................180/69.1
  MOTORCYCLE ........................150/167
  PAINT MASK TYPE ...................118/504
  PERSON (HAT, COAT, ETC.) ..........2
     BUILDING .......................52
     DESIGN OF COVER ................D02/860+
     KNIT WEARING APPAREL TYPE ......66/171+
     LEGGINGS TYPE ..................36/1.5
     TENT OR CANOPY TYPE ............135/87+
  PIANO .............................84/177
  PILLOW ............................5/490
  PIPE END (CONDUIT TYPE) ...........138/96.R+
  PLANT .............................47/28.1+
     CUT OR ARTIFICIAL PLANT ........206/423
  PLATEN ............................355/72+
     ELECTROPHOTOGRAPHIC COPIER .....355/230+
  PLAYING FIELD (BASEBALL) ..........273/27
  POOL TABLE ........................473/34
  PROTECTIVE FOR CIGARETTE PACK .....D27/186+
  PROTECTIVE FOR MATCHES ............D27/173+
  PURSE (DECORATIVE COVER) ..........150/105
  RACQUET ...........................150/163
     INCLUDING PRESS ................273/74
  RADIATOR ..........................237/79
  RAILCAR STEP ......................105/450
  RECEPTACLE ........................150/154
  ROLLER SKATE ......................206/315.1
     BOOT ATTACHED COVER ............280/811
     SCABBARD .......................280/825
  SAP BUCKET ........................47/54
  SAW ...............................150/161
     RIGID GUARD TYPE ...............30/504
  SEWING MACHINE ....................150/164
     DESIGN OF COVER ................D15/75
     HOUSING ATTACHED COVER .........312/208.6
  SHELF (COVERING) ..................428/904.4*
  SHOE (DURING MANUFACTURE) .........36/72.R+
     BAG TYPE .......................383
     SPECIAL RECEPTACLE TYPE ........206/278+
  SKATE (ROLLER OR ICE) .............206/315.1
     BOOT ATTACHED ..................280/811
     SCABBARD .......................280/825
  SKI ...............................206/315.1
     BINDING ........................150/154
     BODY SUPPORTED .................224/191+
     CLAMP OR TIE ATTACHED TO SKI ...280/814+
     VEHICLE SUPPORTED ..............224/309+
  SOAP (POROUS COVER) ...............401/201
  SPONGE ............................15/244.1
  SPOON .............................30/326
  STAIR .............................52/177+
  STEERING WHEEL ....................74/558
  STIRRER ...........................366/349
  SUITCASE ..........................190/26
  SURGICAL DRAPE TYPE ...............128/849+
     THERMAL PROBE ..................374/209
  SWIMMING POOL .....................4
     BUILDING TYPE ..................52
  SWITCH ACTUATOR ...................20/333
  TABLE .............................108/90
  TARPAULIN .........................52/3+
  TELEPHONE .........................379/451+
  TENT OR CANOPY ....................135/115
  THERMAL PROBE .....................374/209
  TIRE OR INFLATED INNER TUBE .......206/304+
     DESIGN OF COVER ................D12/202
     VEHICLE ATTACHED TIRE ..........224/42.2
  TOILET (FLUSH CLOSET) .............4
     COVER FOR SEAT .................4/245.1+
     COVER FOR TANK .................4/901*
     DESIGN OF COVER ................D23/311
     LID FOR CLOSET BOWL ............4/242.1
  TRAILER HITCH BALL ................280/507
  TREE ..............................47/20+
     CHRISTMAS TREE BAG TYPE ........206/423
     TRUNK GUARD TYPE ...............47/23+
  TYPEWRITER ........................150/165
     DESIGN OF COVER ................D18/12
     HOUSING ATTACHED COVER .........312/208.3
  UMBRELLA ..........................135/33.2+
  VAULT PAVEMENT TYPE ...............404/25+
     DESIGN .........................D25/36
  VEHICLE ...........................150/166
     BODY (WHILE IN OPERATION;
       INCLUDING A 'BRA') ...........280/770
     ENGINE ATTACHED DRIP CATCHER
       TYPE .........................180/69.1
     LOAD ...........................296/100+
       DESIGN OF COVER ..............D12/156
     MOTORCYCLE OR BICYCLE ..........150/167
     ROLL UP TYPE ...................296/98
     TIRE ...........................206/304+
       DESIGN OF COVER ..............D12/202
       VEHICLE ATTACHED TIRE ........224/42.2
     WALL (WALLPAPER) ...............428/904.4*
     WASHING MACHINE ................68/196
     WATER HEATER
       BOILER STRUCTURE .............122/494
       ELECTRICAL ...................219
       TANK .........................220
     WINDOW .........................150/168
       RIGID COVER SECTIONS .........160/370.2R+
       VEHICLE COMBINED .............296/95.1
     WINDSHIELD .....................150/168
       RIGID COVER SECTIONS .........160/370.2R+
       VEHICLE COMBINED .............296/95.1
     WIRE COIL ......................206/303
     WOODEN CONTAINER ...............217/3.CV
       BARREL .......................217/81
       COFFIN .......................27/19


COVERING (SEE APPAREL; CLOTHES;
 COATING; GARMENT)
  APPLYING BY LAMINATING ............156
  BRIDGE ............................14/74
  FLOOR
     CARPET .........................428/85+
     LAMINATED ......................428/54
     SLATTED ........................52/664+
  INSULATING FOR ELECTRIC CONDUCTORS 174
  MAKING AND APPLYING ...............156
     BUTTON COVERING ................79/4+
     BY LAMINATING ..................156
     EXTRUDING METAL SHEATH ON WIRE .72/268
     EXTRUDING PLASTIC ON CORE ......425/113
     INDEFINITE LENGTH ELECTRICAL
       CONDUCTOR ....................156/47+
     METAL COVERING .................29/33.2
     PAPER ..........................493
     SHEATH TO TUBE OR ROD ..........228/126+
     SHOE HEEL ......................12/49.1
     STRAP ..........................12/59
     TEXTILE SPINNING ...............57/3+
     WIRE ...........................29/428+
     WITH SHEET METAL ...............29/243.57
  SHELF .............................428/904.4*
  STAIR .............................52/177+
  WALL ..............................428/904.4*

COVERT .............................. 139/416

COWL
  VENTILATING .......................454/3+
     DESIGN .........................D23/374+
     VEHICLE ........................454/146+

CRAB
  PICKER ............................452/6
  PROCESSING FOR FOOD ...............452/1+

CRACK-OFF ........................... 225
  GLASS .............................225/94+


CRACKER
  FIRECRACKER .......................102/361
  FOOD ..............................99
     DESIGN .........................D01/128+

CRACKING
  HYDROCARBON SYNTHESIS
     AROMATIC .......................585/483+
     DIOLEFIN .......................585/613+
     OLEFIN .........................585/648+
     PARAFFIN .......................585/752
     TRIPLE BOND ....................585/534+
  OILS ..............................208/46+
     ELECTROSTATIC OR ELECTRIC
       DISCHARGE ....................204/172

CRACKLED COATING .................... 427/257

CRACKLED GLASS MAKING ............... 65/111

CRADLE
  BATTERY ...........................429/96+
  BED ...............................5/101+
     DESIGN .........................D06/382
  GRAIN .............................56/324
  LAND VEHICLE CONVERTIBLE ..........280/31
  RECEPTACLE STAND ..................248/139
  SQUEEZER TYPE WASHING MACHINE .....68/114

CRAMPS
  BLOCK TIE .........................52/712+


CRANE (SEE DERRICK)
  AUTOMATIC CONTROL .................212/153+
     CUT-OFF ........................212/149+
     CYCLIC .........................212/161
     SWAY ...........................212/147+
  CAB ...............................212/165
     TRAVELLING BRIDGE ..............212/206
  COLLAPSIBLE .......................212/182+
  CORNSTALK CUTTER WITH DISCHARGER ..56/72+
  COUNTERWEIGHT .....................212/195+
     REMOVABLE ......................212/178+
  DAVIT .............................114/368
  DESIGN ............................D34/33
  ELECTRIC CONTROL ..................212/124+
  EXCAVATOR WITH CABLE OPERATED BOOM 37/395+
  FLOATING ..........................212/190+
  INVALID LIFT ......................5/87.1
  LOCOMOTIVE WITH TURNTABLE .........105/28
  MATERIAL OR ARTICLE HANDLING ......414/561+
  REMOTE OR DUAL CONTROL ............212/160
  ROTARY ............................212/223+
  SELF-ERECTING .....................212/176
     CLIMBING .......................212/199+
  SHIP MOUNTED ......................212/190
  TRANSMISSION OF ELECTRICITY TO ....191
  TRAVELING .........................212/71+
     BRIDGE .........................212/205+
  TROLLEY TYPE RAILWAY WITH TRANSFER 104/98
  TRUCKS FOR OVERHEAD ...............105/163.1+
  VEHICLE MOUNTABLE .................212/180
  WINDOW ............................49/148

CRANK
  FOOT OPERATED .....................74/594.1
  HAND LEVER ........................74/545+
  MECHANICAL MOVEMENT INCLUDING .....74
  OPERATED (SEE DEVICE OPERATED)
  PADDLE
     IMPELLER .......................416/78
     MARINE .........................440/26+
     WATER MOTOR ....................416/78
  PEDALS COMBINED ...................74/594.1+
  VELOCIPEDE DESIGN .................D12/123
  WRIST PIN COMBINED ................74/595+


CRANKCASE
  BREATHERS .........................92/78+
  DRAINERS ..........................184/1.5
  HOUSINGS ..........................74/606.R
  INTERNAL COMBUSTION ENGINE ........123/196.CP

CRANKSHAFT
  BEARING
     ANTIFRICTION ...................384/457
     PLAIN ..........................384/429+
     THRUST .........................384/250
  LAPPING ...........................51/73.R
  MAKING ............................29
     APPARATUS ......................29/6.1
     BY TURNING .....................82/106+
     METHOD .........................29/888.8
  STRAIGHTENING .....................72/389+
  TWISTING ..........................72/299
     METHODS ........................72/371

CRASH
  FABRIC ............................26/26
  SEAT ..............................297/216.1+
  SIGNAL FOR AIRPLANE
     RADIO ..........................342/385+
     WATER DYE ......................116/211

CRATE ............................... D09/414+
  ANIMAL NECK STOCKS COMBINED .......119/732+
  ANIMAL SHIPPING, DESIGN ...........D30/109
  FERMENTATION APPARATUS ............435/287+
  FREIGHT CAR COMBINED ..............105/373
  SHOOKS ............................217/43.R
  WOODEN RECEPTACLE .................217/36+

CRAVATS ............................. 2/144+
  FASTENERS .........................24/49.R+


CRAYFISH
  PROCESSING FOR FOOD ...............452/1+

CRAYON .............................. 401/49+
  COMPOSITIONS ......................106/19.R
  HOLDER ............................401/88+
     ADVANCING MEANS COMBINED .......401/55+
  MODIFYING THERMOMETERS ............374/183
  MOLDING DEVICE ....................425/117
  MOLDING DEVICE ....................425/425

CREAM
  COLD ..............................514/772+
  SEPARATING DECANTER ...............210/514+
  SEPARATORS ........................D07/369+
  TREATING PROCESSES ................426/334+
  WHIPPING ..........................261/DIG.16

CREAM OF TARTAR ..................... 562/585
  BAKING POWDER .....................426/562+

CREAMING LATEX
  NATURAL RUBBER ....................528/937*
  SYNTHETIC OR NATURAL RUBBER .......523/335

CREASER (SEE FOLDER)
  BOOT AND SHOE MAKING
     LOOSE UPPER SHAPING ............12/54.1
  BOX, CUT AND CREASE ...............493/59+
  ENVELOPE ..........................493/186+
  HORSESHOE .........................59/36+
  PLAITING FLUTING SHIRRING AND
     CROSS CREASING .................223/29
  SEWING MACHINE ....................112/131
     LEATHER ........................112/51


CREATININE .......................... 548/321.5

CRECHE .............................. D11/122+

CREDIT CARD SYSTEMS ................. 235/380+

CREEL SEE BASKET
  BOBBIN SUPPORTER AND HOLDER .......242/131
  FISHING ...........................43/55
     DESIGN .........................D03/38

CREEPER
  ANTISLIP SHOE ATTACHMENT ..........36/59.R+
  BABY ..............................297/5+
  ELECTRIC WIRE PLACING .............254/134.5+
  HORSESHOE CALK ....................168/30
  REPAIRMANS ........................280/32.6

CREMATION FURNACE ................... 110/194

CREMATORY URNS ...................... 27/1
  DESIGN ............................D99/5

CREOSOTE ............................ 568/716

CREPE PAPER ......................... 428/153+
  MAKING ............................264/282


CREPING
  BY MECHANICAL MANUFACTURE .........28/155+
  CELLULOSE FIBERS ..................8/117
  DIFFERENTIAL ......................8/114.5

CRESIDINE ........................... 564/443

CRESLAN T M (POLYACRYLONITRILE        526/342
 COPOLYMERS) ........................526/342

CRESOL .............................. 568/716+

CRESOTINIC ACID ..................... 562/475

CRESTING ............................ 52/57

CRIB
  BED ...............................5/93.1+
     DESIGN .........................D06/382
  BLANKET DESIGN ....................D06/603+
  CHAIR CONVERTIBLE .................297/7+
  INFANT, POWERED ...................180/166
  LAND VEHICLE CONVERTIBLE ..........280/31
  STORAGE, WITH CHANGING OR          414/288+
     DISCHARGING MEANS ..............414/288+

CRIBBAGE BOARD ...................... 235/90
  DESIGN ............................D10/46.1


CRIBBING ............................ 405/273
  SHAFT .............................405/272

CRIMPED
  FILAMENT COMPOUND METAL ...........428/603
  FILAMENT FIBER OR STRAND ..........428/369+
     STAPLE LENGTH FIBER ............428/362
  METAL CLOSURE .....................220/309
  TWISTED AND COATED OR IMPREGNATED .57/250+
  TWISTED SYNTHETIC .................57/247

CRIMPING SEE CORRUGATING
  AMMUNITION LOADING ................86/39+
  APPARATUS TEXTILE STRANDS .........57/282+
     FALSE TWIST ....................57/282+
     MISCELLANEOUS STRANDS ..........28/247+
     PLASTIC FILAMENTS ..............425/66
     PLASTIC FILAMENTS ..............425/303
     PLASTIC FILAMENTS ..............425/325+
     TWISTING AND COATING 57/286
       OR IMPREGNATING ..............57/286
  BARBED WIRE .......................140/59+
  BOOT AND SHOE MAKING
     LOOSE UPPER SHAPING ............12/54.1+
     WITH DIVERSE OPERATIONS ........12/52.5
  BOX EDGE MAKING ...................493/109
  CIGAR OR CIGARETTE END FORMING ....131/89+
  CLOSURE CAP STRUCTURE .............215/324+
  GLASS RESHAPING APPARATUS .........65/269+
  HAIR CRIMPER ......................132/224+
     DESIGN .........................D28/35
     PROCESS ........................132/210
  METAL BENDING BY ROLLS ............72/199+
  PAPER IN WRAPPING MACHINE .........53/370
  PAPER RECEPTACLE END STRUCTURE ....229/5.6
  PIE MAKING IMPLEMENT ..............425/293
  SEWING MACHINE RUNNING STITCH .....112/174+
  SLEEVE OR TUBE CONNECTOR ..........29/282
     HAND TOOLS .....................29/282
  TEXTILE FABRICS ...................26/21
  TEXTILE FIBERS ....................19/66.1+
  TEXTILE STRANDS
     PLASTIC FILAMENTS ..............264/168
     TWISTING SYNTHETIC STRANDS .....57/282
  WIRE ..............................140/105+


CRINGLE ............................. 114/114

CROCHETING
  FABRIC ............................66/193
  KNITTING ..........................66/85.R
  NEEDLES ...........................66/118
  SEWING ............................112/116

CROOK ............................... 119/801+

CROP
  RIDING ............................231/2.1+
  THINNERS ..........................47/1.43

CROQUET
  DESIGN ............................D21/210+
  GAME ..............................273/56+
  MALLET ............................273/83

CROSS
  BAIL FOR HARNESS ..................24/172+
  BEARER FOR RAILWAY CAR UNDER FRAME 105/419
  BRACED POLE ARM ...................52/697
  CHAIN ANTISKID FOR WHEELS .........152/223+
  DECORATIVE ITEM ...................D11/96
     WITH ILLUMINATION ..............362/121
  HEAD
     BEARING SLIDE ..................384/11
     DIE CUTTING MACHINE ............83/624+
     MINE ELEVATOR GUIDE ............187/96
     MOTOR VALVE ACTUATOR ...........91/218+
     SHOE HEEL NAILING MACHINE ......227/135
  MODULATION (SEE INTERMODULATION)
  RAIL FOR METAL PLANER .............409/325
  TREE SHIP SPAR ....................114/92
  WINDING ...........................242/43.R
     FISHING REELS ..................242/273+
     SPINNING REELS .................242/241+


CROSS LAID TEXTILE .................. 28/100+

CROSS TALK
  SUPPRESSION IN TELEPHONE SYSTEM ...379/417+
  TELEGRAPHY ........................178/69.R

CROSS WALK PAVEMENT ................. 404/17+

CROSSBAR
  CLOSURE FASTENER ..................292/259.R+
  EXERCISING DEVICE .................482/16+
  TELEPHONY SELECTIVE SWITCH ........335/112

CROSSBOW
  DESIGN ............................D22/107
  MECHANICAL PROJECTOR ..............124/25

CROSSING
  CONTINUOUS RAIL SIGNALS ...........246/375+
  PROTECTION RAILWAY ................246/111+
  RAILWAY
     CABLES .........................104/185+
     CONDUIT ........................104/141
     DRAWBRIDGE SIGNAL ..............246/118
     EXTENSIBLE GATES ...............49/124
     GATES ON OPPOSITE APPROACHES ...49/93
     TRAIN ACTUATED GATES ...........49/263+
  ROAD SYSTEM .......................404/1
  SIGNALS CAR DISPLAYED .............246/208
  SIGNALS HIGHWAY AUTOMATIC .........246/293+
  STREET ROAD BED RAILWAY ...........238/8
  STRUCTURE RAILWAY .................246/454+
  TROLLEY ...........................191/37


CROSSOVER
  ELECTRIC INSULATOR MIDLINE SPACER .174/147
  PORTABLE RAILWAY TRACK ............238/12
  PREVENTER FOR SKIS ................280/817

CROTCH .............................. 114/99

CROTONIC ACID ....................... 562/598

CROWBAR
  DESIGN ............................D08/88+
  FREIGHT CAR DOOR OPERATOR .........49/275
  PUSHING AND PULLING ELEMENT .......254/133.R
  TOOL COMBINED WITH OTHERS .........7/166+
  TRACK TOOL ........................104/10

CROWEACIN ACID ...................... 549/436

CROWN
  BOILER CROWN SHEET ................122/496
     PROTECTING .....................122/495
  BRIDLE LOOP .......................54/13
  GEARING INTERCHANGEBLY LOCKED .....74/351
  GEM SETTING .......................63/27
  LIGHT SHADE OR BOWL SUPPORT .......362/452
  TOOTH .............................433/218+
     SHAPING INSTRUMENTS ............433/156+
  WATCH AND CLOCK CROWN MAKING ......29/179

CROWN ETHERS ........................ 549/347+


CROWNING DEVICE
  DENTAL INSTRUMENT .................433/141+
  PIANO SOUNDING BOARD ..............84/196

CROZE AND CROZING
  BARREL ............................147/13+
     CLOSURE ........................217/80
  STAVES ............................147/18+

CRT RECORDER ........................ 346/158
  ELECTRICAL MEMORIES ...............365/118

CRUCIBLE SEE VESSEL
  ELECTRIC FURNACE ..................373
     ARC FURNACE DEVICE .............373/72
     ELECTROSLAG REMELTING DEVICE ...373/45
     GLASS FURNACE DEVICE ...........373/30+
     INDUCTION FURNACE DEVICE .......373/138+
       CRUCIBLE .....................373/156+
       CRUCIBLE OR HEARTH ...........373/163
     RESISTANCE FURNACE DEVICE ......373/109+
       INCLUDING CRUCIBLE OR HEARTH  373/122
        STRUCTURE DETAILS ...........373/122
  FURNACES ..........................432/156+
  HEATING GENERAL APPLICATION .......432/262+
  LABORATORY ........................422/102
  METALLURGICAL .....................266/275+
  SPECIAL MATERIAL OR TREATMENT .....156/DIG.83
  THERMIT ...........................266/167

CRUCIFIX DESIGN ..................... D99/27

CRULLERS ............................ 426/556

CRUMB BRUSH ......................... D04


CRUPPER ............................. 54/22

CRUSHER ............................. 241
  ELEMENTS ..........................241/291+
  GRINDING WHEEL DRESSING ...........125/11.11
  HOLLOW METAL BODY .................10
  NUT EDIBLE ........................99/568+
  ROAD IN SITU ......................404/90+
  SURGICAL INSTRUMENTS ..............606/136+
  TOBACCO STEM ......................131/324
  VEGETABLE MASHER ..................241/169.2

CRUST
  PIE CRUST SHEET METAL MOLD ........99/432
  PIE DOUGH .........................426/391

CRUSTACEAN
  CULTURING .........................119/204+
  PROCESSING ........................452/1+

CRUTCH .............................. 135/68+
  DESIGN ............................D03/8
  STILTS ............................432/258+

CRYOGENIC TRAP ...................... 62/55.5
  LIQUIFIED GAS CONTENT RECEPTACLES .220/901*

CRYPT (SEE MAUSOLEUM)


CRYPTOGRAPHY
  CODE RECEIVERS ....................178/89+
  CODE TRANSMITTERS .................178/79+
  CODES .............................341/67
  FRAUD PREVENTING ..................283/73
  PRINTED MATTER ....................283/17
  SIGNALS ...........................116/18+
  SIGNALS RAILWAY CAB ...............246/175
  TEACHING ..........................434/55+
  TYPEWRITING .......................40/89+

CRYSTAL
  COMPOSITION, INORGANIC LUMINESCENT 252/6+
  COMPOSITION, ORGANIC LUMINESCENT ..252/301.16
  FILTER ............................333/187+
  IN SAMPLE HOLDER ..................378/79
  LIQUID CRYSTAL COMPOSITION ........252/299.1+
  LIQUID OPTICAL FILTER .............359/36+
  LIQUID STOCK MATERIAL .............428/1
  METAL WORKING, MAKING .............29/DIG.17
  MICROPHONES .......................381/173
  PICKUPS ...........................369/144
  PIEZOELECTRIC .....................310/311+
  SCINTILLATION .....................250/458.1
  SHEET, RIBBON OR TUBE .............156/DIG.88
  WEB OR CAGE CRYSTAL GROWTH ........156/DIG.84

CRYSTALLIZATION OF GLASS ............ 65/33
  APPARATUS .........................422/245+
  DISTILLING PROCESSES WITH .........203/48
  GROWING CRYSTAL FROM FLUID-        437/81+
     SEMICONDUCTOR DEVICE FORMING ...437/81+
  HYDROCARBON RECOVERED .............585/812+
  INORGANIC COMPOUNDS PROCESS .......23/295.R+
  SINGLE CRYSTAL ....................156/600+
  SUGAR
     APPARATUS ......................127/15+
     PROCESSES ......................127/58+

CUBICLE ............................. 52/329


CUE
  BILLIARD ..........................473/44+
     DESIGN .........................D21/210+
  CHALKERS ..........................473/35+
  RACKS .............................211/68
  RESTS .............................473/42+
  STRUCTURE .........................473/44+
  TRIMMERS ..........................30/494

CUFF
  APPAREL DESIGN ....................D02/858
  HANDCUFF ..........................70/16+
  HOLDER ............................24/41+
     DESIGN .........................D11/222+
  MAKING ............................223/2+
     IRONING ........................223/52.1+
  PROTECTOR .........................2/60
  SHIRT .............................2/123+

CUFF LINK ........................... 24/41
  DESIGN ............................D11/222+

CULINARY
  PROCESSES AND APPARATUS ...........99

CULTIVATOR
  FLAME TYPE ........................47/1.44
     CROP THINNING ..................47/1.43
     METHODS ........................47/58
     WEED KILLER ....................126/271.1+
  HARROW ............................172
  METALWORKING MAKING ...............29/14
  PLOW TYPE .........................172


CULTURES
  ANIMAL HUSBANDRY
     AQUARIUMS ......................119/245+
     AQUATIC ........................119/200+
     CRUSTACEAN .....................119/204+
     FISH ...........................119/215+
     INSECT .........................119/6.5+
     INSECT LARVAE ..................119/6.5+
     MOLLUSK ........................119/234+
     SILKWORM .......................119/16
     WORM ...........................119/6.7
  BACTERIAL CULTURE .................426/43
  BEE CULTURE .......................449
  INCUBATORS OR RACKS ...............435/809*
  PLANT HUSBANDRY
     ALGAE CULTURE ..................47/1.4
     ELECTROCULTURE .................47/1.3
     MUSHROOM CULTURE ...............47/1.1
     WATER CULTURE ..................47/59+
  TISSUE CELL CULTURE ...............435/41
  VIRUS CULTURE APPARATUS ...........435/284

CULVERT ............................. 405/124
  STATIC MOLD .......................249/11+


CUP (SEE DISH; RECEPTACLE) .......... 215
  CLEANING ATTACHMENTS DRIP .........15/248.1+
  CORRUGATING WALL ..................72/176
  DISPENSER .........................D06/516
  DRINKING ..........................215
     COLLAPSIBLE ....................220/8
     DESIGN .........................D07/509+
     DISPENSERS .....................D06/516
     STAND, RACK, OR TRAY FOR .......D07/616
     STRAINER DETACHABLE ............210/464+
  DRINKING FOUNTAIN BUBBLE ..........239/31+
     HOLDERS ........................312/43
  DRIP SEE DRIP CUP
  EDGE
     MAKING MACHINE .................493/109
     TRIMMING .......................83/178+
  EGG ...............................211/14
     DESIGN .........................D07/503
  FOOTED ............................D07/524
  HOLDER ............................222
  ICE CREAM .........................D01/116+
  INKWELL DESK-ATTACHED .............108/26.2
  LACTEAL
     EXTRACTORS .....................604/74
     PADS ...........................604/346
  MEASURING .........................73/426
     DESIGN .........................D10/46.2
  METAL WORKING, CUP FORMED & BOTTOM 29/DIG.9
     REMOVED ........................29/DIG.9
  OIL CUP CLOSURE ...................184/88.1+
  PESSARY ...........................128/839+
     SOUNDING COMBINED ..............33/713
     THERMOMETER COMBINED ...........374/157
  SEWING MACHINE FEED ...............112/18
  SHAVING ...........................220
  SOUNDING WITH SAMPLING ............33/717+
  STAMPING FROM SHEET ...............72/343+
  SUCTION
     BRACKET SUPPORT ................248/205.5+
     LIGHT SUPPORTS .................362/397
  SURGICAL VACUUM ...................604/313+
  UMBRELLA DRIP .....................135/48

CUPBOARD
  LATCH .............................D08/331+


CUPOLA
  BUILDING ..........................52/208
  DESIGN ............................D25/35+
  GAS GENERATORS ....................48/62.R+
  METALLURGICAL .....................266/197+
     DISCHARGING ....................266/195+
     FOREHEARTHS ....................266/166
     X-ART ..........................266/900*
  ORE TREATING ......................266/219

CUPRAMMONIUM ACETATE
  HYDROCARBON PURIFICATION BY .......585/846

CUPRAMMONIUM CELLULOSE .............. 536/57
  COMPOSITIONS ......................106/167
  FIBER MODIFICATION ................8/123

CUPREINE ............................ 546/134
  IN DRUG ...........................514/305

CURB
  DESIGN ............................D25/119
  FEELER ............................D10/117
  FLOWER BED EDGING .................D25/38+
  HYDRANTS ..........................137/272+
  PIN FOR WATCH BALANCE REGULATING ..368/176
  STREET ............................404/7+
     CATCH BASIN WITH STRAINER ......210/299+
     ELECTRIC CONDUCTOR CONTAINING ..174/39
     STATIC MOLD FOR MAKING .........249/8

CURBING CHAIN MAKING ................ 59/28

CURD BREAKER ........................ 99/452+


CURETTE ............................. 606/160

CURING
  HAY AND FODDER ....................426/636
  TOBACCO
     ELECTRICAL OR RADIANT ENERGY ...131/299
     FLUIDS OR FLUENT MATERIAL ......131/300+

CURLER
  APPAREL IRONERS ...................223/52.2+
  CURLING IRON FOR HAIR .............D28/38
  CURLING IRONS SELF HEATING BY
     BURNER .........................126/408+
     ELECTRIC HEATERS ...............219/222+
  HAIR ..............................132/226+
     DESIGN .........................D28/35+
  HAT BRIM SHAPING APPARATUS ........223/14
  METAL EDGE CURLING ROLLS ..........72/102
  TEXTILE FIBER WORKING .............19/66.1
  YARN TWISTER ......................57/29


CURRENT ELECTRIC
  ALTERNATING IN TELEGRAPH SYSTEMS ..178/66.1+
  ALTERNATING ROTARY FIELD AND
     ARMATURE DYNAMO ................290/5
  BELTS .............................607/149
  COLLECTORS
     DYNAMO .........................310/219+
     MOVING VEHICLE .................191
     ROTATABLE CONNECTOR ............439/13+
  CONDUCTIVE FLUIDS .................174/9.F
  CONTROL
     ARC DISCHARGE ..................315
     ELECTRICAL SEPARATION OF
       LIQUIDS ......................204/305+
     ELECTROLYTIC APPARATUS .........204/193+
     ELECTROSTATIC DISCHARGE ........422/186.28+
     RAILWAY SIGNAL SYSTEMS .........246
  CONVERTING ........................363
     CURRENT CONVERSION .............363/13+
  DIRECTION INDICATORS POLARITY
     TESTERS ........................324/133
  DISTRIBUTION IN VEHICLE
     TRANSMISSION ...................191/2+
  ELECTRIC MUSIC INSTRUMENT .........84/600+
  FOOD PRESERVATION .................426/244+
  GENERATING STRESS STRAIN TEST .....73/763+
  GENERATING THERMOMETERS ...........374/179
  MEASUREMENT OF ELECTRICITY ........D10/75+
  METERS ELECTRIC ...................324/76.11+
  MODIFYING THERMOMETERS PLURAL ZONE 374/110+
     AVERAGING ......................374/115
     DISTINCT TEMPERATURES ..........374/166+
  OPERATED TELAUTOGRAPH .............178/19+
  OPERATED THERMOMETERS .............374/163+
     DIGITAL OUTPUT .................374/170+
  PULSATING IN TELEGRAPH SYSTEMS ....178/66.1
  RAILWAY BLOCK SIGNALS .............246
  REGULATION FOR X RAYS .............378/109
  REGULATION OF ALTERNATING          322/27
     CURRENT GENERATORS .............322/27
  REGULATORS ........................323
  REVERSING IN TELEGRAPHY ...........178/16
  SHIFTING SWITCH IN ARC LAMPS ......314/2
  SUPERPOSED TELEGRAPH SYSTEM .......178/49
  SUPPLY TO ELECTRIC FURNACES .......373
     ARC FURNACE ....................373/102+
     GLASS FURNACE ..................373/39+
     INDUCTION FURNACE ..............373/147+
  SUPPLY TO ELECTRIC RAILWAYS .......191
  TRANSFORMERS ......................336


CURRENT FLUID
  BRAKE OPERATORS ...................188/155
  CENTRIFUGAL FLUID
     DISTRIBUTOR OPERATED BY ........239/214.13
  CLASSIFYING SEPARATING AND
     ASSORTING SOLIDS ...............209/132+
  CLEANING IMPLEMENTS OPERATED BY ...15/104.61+
  CONVEYER FOR RAILWAY SNOW
     EXCAVATOR ......................37/202
  CONVEYERS .........................406
  DREDGES OPERATED ..................37/325+
     SCOURING .......................37/342+
  EVAPORATORS BLAST OR CURRENT ......159/16.1
  EVAPORATORS FILM TYPE .............159/8+
  EVAPORATORS SPRAY TYPE ............159/4.1
  FUMIGATORS ........................422/305+
  MASSAGE ...........................128/66
  MEASURING
     FLOW DIRECTION .................73/170.11+
     SHIPS LOGS .....................73/181
  MOTOR .............................416
     DYNAMO WITH ....................290
     PUMP WITH ......................417/334
  ROTARY FLUID DISTRIBUTOR239/222.17
     OPERATED BY ....................239/222.17
  STEAM INJECTION ...................159/16.3
  SUBMERGED COMBUSTION ..............159/16.2
  VALVE RECIPROCATING DISK ROTATING .137/330+

CURRYCOMB ........................... 119/86+
  DESIGN ............................D30/159

CURRYING
  COMPOSITIONS ......................252/8.57
  PROCESS ...........................8/94.21+

CURSOR, DISPLAY INPUT CONTROL ....... 345/157+