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:


SHOCK ABSORBER (SEE DASHPOT)
  DIAL INDICATOR TYPE ...............33/DIG.6
  FLUID .............................188/266+
     THRUST MEMBER, VARIABLE VOLUME
       CHAMBER ......................188/297+
  HARVESTER RECIPROCATING CUTTERS ...56/306
  NUCLEAR REACTOR CONTROL ...........376/234
     COMPONENT COMBINED .............376/285
  NUCLEAR REACTOR CONTROL ...........376/327
  RECOIL ORDINANCE ..................89/42.1+
  SPRING TYPE .......................267
     BED ............................5/253
  SUPPORT TYPE, NONRESILIENT ........248/636+
  SUPPORT TYPE, RESILIENT ...........248/562+
     SUSPENDED MACHINE ..............248/610+
  TESTING ...........................73/11.1+
  TEXTILE FEEDING KNITTING ..........66/130
  VEHICLE
     BODY SUSPENSION FRAME ..........280/784
     FENDER .........................293/132+
       FLUID ABSORBS ................293/107+
     RAILWAY ........................105/392.5
     RAILWAY COUPLING ...............213/7+
     RUNNING GEAR ...................280/688+
     SEAT ...........................297/216.1+
  WEIGHING SCALES ...................177/184+


SHOCKER AND SHOCK DELIVERY
  ELECTRIC
     AMUSEMENT DEVICES ..............472/56
     ANIMAL RESTRAINING DEVICES .....119/908*
     BANDAGING ......................602/2
     CHECK OPERATED .................194
     ELECTRIC CHAIRS ................128/898+
     ELECTRIC FENCES ................256/10
     ELECTROCUTING ANIMAL ...........43/98
     ELECTROCUTING TRAP INSECT ......43/112
     FISHING ........................43/4
       TRAWL NET TYPE ...............43/9.6
     FOOD PRESERVATION ..............426/237+
     FOOD PRESERVATION APPARATUS ....99/451
     KINESITHERAPY EG MASSAGE .......128/24.1+
     KINESITHERAPY EG MASSAGE .......602/2
     MEDICATORS .....................604/20+
     MISCELLANEOUS ..................361/225+
     RECEPTORS ......................604/20+
     SAFES ..........................109/35
     STERILIZING METHOD .............422/22
     SURGICAL APPLICATIONS ..........607/1+
     SURGICAL INSTRUMENTS ...........606/32+
     THERAPY, MEDICAL ...............607/149
  HARVESTER .........................56/401+


SHOE
  ANIMAL WEAR .......................36/111
     DESIGN .........................D30/146+
     FARRIERY .......................168
     MAKING .........................59/36+
     OXSHOE MAKING ..................59/70
  APPAREL ...........................36
     ACCESSORY ......................36/136+
     ANTI-SLIPPING DEVICES ..........36/59.R+
     ATHLETIC .......................36/114+
     BATHING ........................36/8.1
     BOWLING ........................36/130
     BOX ............................206/278
     BUTTONERS ......................24/40
     CEMENT .........................36/DIG.1
     CLEANING TYPE ..................15/227
     CLEAT ..........................36/134
     DESIGN .........................D02/896+
     FOOT ELEVATORS .................36/81
     FOOTBALL .......................36/128
     HEELS ..........................36/34.R+
     INSOLES ........................36/43+
     JUMPING ........................36/7.8
     LACING DEVICES .................24/712
     LIGHT THERMAL AND ELECTRICAL ...607/1+
     MAKING SEE BOOT MAKING .........12
     NON-LEATHER ....................36/84+
     OCCUPATION SPECIALIZED .........36/113
     ORNAMENTS ......................2/245
     PATTERNS .......................33/3.R+
     PLASTIC ........................36/DIG.2
     PRICKING SOLES .................83/866+
     PUTTING ON AND REMOVING AIDS ...223/113+
     RACK ...........................211/34+
     RIDING .........................36/131
     RUBBER .........................36/4
     RUNNING ........................36/129
     SANDAL .........................36/11.5
     SEWING MACHINES ................112/28+
     SHOEHORNS ......................223/118+
     SHOELACE DESIGN ................D02/978
     SHOELACE RACKS .................211/61
     SHOEMAKERS BENCH ...............12/122
     SKATE ATTACHING ................280/11.3+
     SKI ............................36/117+
     SLIPPERS FOR INSIDE ............36/10
     SOLE ATTACHING MEANS ...........36/12+
     SOLES ..........................36/25.R+
     STRAP TIGHTENERS ...............24/68.SK+
     SUPPORT FEATURE ................36/88+
     TRACK ..........................36/129
     UPPERS .........................36/45+
     WATER PROOFED FINISH ...........36/98
  BRAKE .............................188/250.R+
     BEAM COMBINED ..................188/219.1+
     FASTENERS ......................188/234+
     MOMENTUM OPERATED WEDGING ......188/136
     RAILWAY CHOCK ROLLER TYPE ......188/37
     RAILWAY SIDE ...................188/59
     RAILWAY TOP ....................188/57
     RAILWAY TRACK ROTARY ...........188/39
     VEHICLE FENDER COMBINED ........293/8
     VEHICLE TYPE TOP ...............188/29
     WAGON TYPE RETREATING ..........188/15
     WEAR COMPENSATION ..............188/215
     WHEEL ROTARY ...................188/80
  BRIDGE TRUSS ......................14/15
  CLEANING SEE POLISHING & CLEANING
  CLEAT OR SPIKE ....................D02/962
  DEMONSTRATION .....................434/397
  FILLING COMPOSITIONS ..............106/38
  FLATIRON ATTACHMENTS ..............38/97
  HARVESTER CUTTER MEMBER ...........56/303
     TRACK CLEARERS WITH SOCKET .....56/318
  HORN ..............................223/118+
     DESIGN .........................D02/642
  LACE ..............................D02/978
  LACE TIP APPLIER ..................29/243.57
  PANEL HANGERS OR TRAVELERS ........16/93.R+
  PEDALS WITH CLIPS FOR .............74/594.6
  PLOW ..............................172/764
     BODY SHOE AND GUIDE ............172/764
  POLISHING AND CLEANING
     APPLICATOR CARRIED BY CLOSURE ..401/126+
     BRUSHING MACHINE ...............15/36+
     BRUSHING MACHINE WITH POLISH
       SUPPLY .......................15/30+
     COMPOSITION ....................106/3+
     IMPLEMENT WITH MATERIAL SUPPLY .401
     MITTS COTS AND SHOES ...........15/227
     SHOE BLACKING STANDS ...........15/265+
     SHOE IMPREGNATED OR COATED WITH
       CLEANING MATERIAL ............15/104.94
  RACK ..............................211/34+
  RAILWAY SWITCH POINT THROWERS .....246/269
  SAFETY ............................36/77.R
  SHINE KIT .........................D03/30.1+
  SHINE MACHINE .....................D32/14.1
  SHINE STAND WITH SEAT .............D06/334+
  SHOEHORN ..........................D02/642
  SNOW ..............................36/122+
  THIRD RAIL COLLECTOR ..............191/49
  TREES .............................12/114.2+
     DESIGN .........................D02/979
  VEHICLE (SEE BRAKE)
     EARTH WORKING TOOL WITH ........172
     FENDER WITH CAR CONTROL ........293/8
     RAILWAY DRAFT CENTRAL
       FRICTION POST ................213/36
     RAILWAY DRAFT FRICTION CASING ..213/32.R+
     RAILWAY DRAFT SPRING AND
       FRICTION .....................213/24
     TWO WHEELED SCOOP WITH .........37/439
  WATER .............................441/76+
  WELL CASING .......................166/242
     WITH CUTTING OR SCRAPING MEANS .175/402
     WITH SCREEN ....................166/157

SHOOTING GALLERY GAME ............... D21/2+

SHOOTING LINES
  FISHING APPARATUS .................43/6
  LINE CARRYING AMMUNITION ..........102/504
     BOMB LANCES ....................102/371
  LINE PROJECTOR OR PROJECTILE ......182/50
     EXPLOSIVE ......................89/1.34

SHOOTING TARGETS .................... D21/5

SHOPPING BAG ........................ 383/6
  HANDLE  ATTACHING .................493/226

SHORINGS
  EARTH CONTROL .....................405/272
     MINE ROOF PROPS ................405/288+
     TRENCH WALLS ...................405/282+

SHORT CIRCUIT
  FOR ARC LAMPS .....................314/10+
  FOR INCANDESCENT LAMPS ............315/119+
  SAFETY DEVICE .....................174/5.R
  SAFETY SYSTEM .....................361/1+

SHORTENING .......................... 426/601+


SHORTHAND
  CODE ..............................283/46
     WRITING FORM ...................283/45
  TEACHING ..........................434/158+
  TYPEWRITER ........................40/91+

SHOT
  BLASTING ..........................72/53
     METAL WORKING DIGEST ...........29/DIG.36
  CARTRIDGES ........................102/448+
  EARTH BORING BY ...................175/54
  MAKING ............................29/1.22+
  METAL MAKING
     APPARATUS ......................425/6+
     PROCESSES ......................264/5+

SHOTGUN ............................. D22/103

SHOTGUNS (SEE RIFLE) ................ 42
  DESIGN ............................D22/103

SHOT-PUT ............................ 482/22

SHOTTING
  CLEANING MACHINE ..................15/95+
     METHODS ........................134/7


SHOULDER
  BRACES PADS AND SUPPORTS ..........2/45
     BACK AND .......................2/44
     BODY PROTECTING ................2/2
     BRASSIERE COMBINED .............450/2
     CORSET OR GIRDLE COMBINED ......450/96
     GARMENT SHAPING ................2/268
     GARMENT SUPPORTING .............2/305
  RESTS FOR VIOLINISTS ..............84/280
     COMBINED WITH CHIN REST ........84/278
  TANG HOLDING CHUCK ................279/89+

SHOVEL
  CRANE .............................212/243
  EXCAVATING ........................37/379+
     DESIGN .........................D08/10
  HAND MANIPULABLE ..................294/49+
     DESIGN .........................D08/10
  MAKING
     BLANKS AND PROCESSES ...........76/113
     DIES ...........................72/470+
  PLOW OR CULTIVATOR TYPE ...........172/768
  RAILWAY CAR LOADING ...............414/340+
  REPOSITIONING SUPPORT TO LOAD OR   414/349+
     UNLOAD .........................414/349+
  SNOW ..............................294/54.5
  TRAIN OF VEHICLES .................414/339

SHOWCASE
  CABINET ...........................312/114+
     DESIGN .........................D06/432+
     OUTDOOR TYPE ...................312/102
  ILLUMINATION ......................362/125
  JOINT BETWEEN GLASS WALLS .........312/140
  SHOW OR PICTURE WINDOW ............52/777+
  SHOW OR PICTURE WINDOW ............52/764+


SHOWER (SEE SPRINKLING)
  BATH ..............................4/615+
     HOT AIR COMBINED ...............4/525+
     SURGICAL .......................607/81+
  DESIGN ............................D23/283
  DESIGN, CAP .......................D02/867+
  HEADS .............................239/548+
     DESIGN .........................D23/213+
  TEMPERATURE CONTROL OF WATER ......236/12.1+

SHRAPNEL ............................ 102/491+

SHREDDED CEREAL BISCUIT ............. 426/560
  APPARATUS .........................425/289+
  DESIGN ............................D01

SHREDDERS AND SHREDDING ............. 241
  METAL .............................29/4.51+

SHRIMP
  PROCESSING FOR FOOD ...............452/2+

SHRINKING
  METAL BANDS BY HAMMERING OR        72/399
     PRESSING .......................72/399+
  SHRINK FITTING ....................29/447
     METAL WORKING DIGEST ...........29/DIG.35
  TESTING FOR .......................73/159+
  TEXTILES ..........................26/18.5
     THREAD COMPACTING ..............26/18.6
  TIRE ..............................72/292

SHRINKPROOFING FABRICS .............. 26/18.5+


SHUFFLEBOARD ........................ 273/126.R
  DESIGN ............................D21/7+

SHUNT
  FOR ELECTROMAGNET .................335/236+
  RESISTOR ..........................338/49
     WITH METER .....................324/126

SHUTTER
  ARCHITECTURAL DESIGN ..............D25/47+
  CAMERA ............................354/226+
     AUTOMATIC CONTROL ..............354/410+
     COPYING CAMERA .................355/71
     CURTAIN ........................354/241+
     DELAYED RELEASER ...............354/237+
     DIAPHRAGM ......................354/270+
     FOCAL PLANE ....................354/241+
     IMAGE PROJECTOR ................353/88+
     IRIS DIAPHRAGM .................354/270+
     IRIS TYPE ......................354/241+
     MECHANICAL TESTING .............73/5
     MOTION PICTURE .................352/204+
     OPTICAL TESTING ................73/5
     PIVOTED LEAVES .................354/241+
     SLIDING ........................354/245+
  CHECK CONTROLLED ..................194
  CURTAIN SHADE OR SCREEN COMBINED ..160/104
  FASTENER OR HOOK FOR ..............D08/349+
  LADDER CONVERTIBLE ................182/21
  OPERATOR ..........................49/324+
  PROJECTOR ILLUMINATING ............362/277+
  X RAY .............................378/160

SHUTTLE
  BOXES .............................139/183
  BRAIDING TATTING AND NETTING ......87/54+
  CHANGING IN LOOMS .................139/234+
  GRIPPER ...........................139/196.2+
     SEWING MACHINE .................112/185+
  SEWING MACHINE ....................112/232+
     DESIGN .........................D15/72
  THREADERS .........................139/381+
  WINDING
     SEWING MACHINE .................242/20+
     TATTING ........................242/52


SHUTTLECOCK ......................... 273/417
  DESIGN ............................D21/207

SIALON REFRACTORY COMPOSITIONS ...... 501/98

SICKLE
  HAND MANIPULABLE ..................30/309
  MACHINE USING .....................56/229+

SIDE LIGHTS ......................... 362/61+

SIDE LOCK (SEE LOCK)

SIDEARMS ............................ D22/100+

SIDEBAR, CYLINDER LOCK .............. 70/496

SIDEBOARD
  CABINET ...........................312
     DESIGN .........................D06/432+
     FULLY ENCLOSED STORAGE .........D06/432+
  DUMPING VEHICLE ...................298
  REFRIGERATOR COMBINED .............62/258


SIDEHILL IMPLEMENT
  HARVESTER PLATFORM ADJUSTMENT .....56/209
  LAND VEHICLE BODY LEVELLING .......280/840+
  PLOWS .............................172/204+
  STEAM TRACTION VEHICLE BOILER
     LEVELLING ......................180/39
  TANK OR BOILER ....................280/7

SIDESLIP ............................ 73/180

SIDING .............................. 52/474+
  SHINGLE TYPE ......................52/518+

SIEVE
  LIQUID MATERIAL ...................210/348+
  SOLID MATERIAL ....................209/233+

SIFTER AND SIFTING (SEE SCREEN)
  CABINET WITH ......................312/210.5
  KITCHEN UTENSIL ...................D07/667
  PNEUMATIC CONVEYOR INTAKE .........406/121
  POTATO DIGGERS ....................171/71+
  POTATO DIGGERS ....................171/111+
  SEPARATING SOLIDS
     COMBINED OPERATIONS ............209/12+
     COMMINUTING SURFACE APERTURED
       FOR ..........................241/83+
     COMMINUTION AND GAS BORNE
       MATERIAL .....................241/49+
     COMMINUTION COMBINED ...........241/68+
  STOVE ASHPAN ......................126/244


SIGHT
  BOW, ARROW ........................33/265
  DISPENSER INSPECTION ..............222/154+
  DRIFT .............................33/320
  FEED LUBRICATOR ...................184/96+
  GLASS LIQUID LEVEL GAUGE ..........73/323+
  GUN ...............................33/233+
     DESIGN .........................D22/109
     DESIGN, TELESCOPIC .............D16/132
     FIDUCIAL TELESOPES .............356/247+
     ILLUMINATED SIGHTS .............362/110
  LETTER BOX SIGNAL .................232/34+
  LINE CONTROLLED SCRIBER ...........33/20.1+
  OPENING IN UMBRELLA ...............135/33.7
  PROJECTOR .........................362/383
  TELESCOPES ........................359/429+

SIGN AND SIGN EXHIBITING ............ 40/584+
  CIRCUIT CONTROL FLASHING LIGHT ETC 40/902*
  CLERICAL DESK ARTICLE COMBINED ....40/358
  DIRECTIONAL DESIGN ................D20/29+
  ELECTRIC SIGNAL DISPLAY SYSTEM ....345+
  FIBER OPTICS, EG LIGHT PIPE .......40/547
  FRAME .............................D19/52
  ILLUMINATED .......................40/541+
  ILLUMINATION ITSELF ...............362/812*
  MIRROR HAVING CHANGING EFFECT .....40/900*
  MOUNTING BRACKET ..................D08/354+
  OUT-TO-LUNCH TYPE SIGNS ...........40/907*
  PEN AND PENCIL X-ART COLLECTION ...40/905*
  REFLECTING TRIANGLE FOR HIGHWAY USE40/903*
  ROADWAY WARNING ...................D20/10+
  SOUND X-ART COLLECTION ............40/906*
  STREET ............................40/612
  SUPPORTS ..........................248/466+
  TOWED THROUGH SKY .................40/215
  TV OR RADIO PROGRAM INDICATOR .....40/901*
  VEHICLE MOTION AND DIRECTION ......116/42+
  WARNING REFLECTOR OR FLASHER ......D10/114+
  WINDOW SHADE ......................160/10

SIGN, ILLUMINATED ................... 362/812*


SIGNAL .............................. 116
  ACOUSTIC ..........................116/67.R+
     BELLS ..........................116/148+
     HORNS ..........................116/137.R+
     SIRENS .........................116/147+
     WHISTLES .......................116/137.R+
  ALARMS ............................116/67.R+
  AMPLIFIER CONDITION ...............330/2
  ANNUNCIATORS ......................340/815.1+
  ARC LAMP ..........................314/9
  AUTOMOBILE HORNS ..................116/137.R+
  AWAKENING DEVICE (SEE AWAKENER)
  BALLOONS ..........................116/DIG.9
  BANK PROTECTION ...................109/21
  BEVERAGE INFUSER ..................99/285
  BICYCLE BELLS .....................116/166
  BOILER COMBINED ...................122/504.2
  BRAKE WEAR ........................188/1.11
  BUOY ..............................116/26+
  BURGLAR ELECTRIC ..................340/541+
  BURGLAR MECHANICAL ................116/6+
  CABINET WITH ......................312/234
  CALCULATOR OR REGISTER COMBINED ...235/128
  CHECK CONTROLLED APPARATUS
     CHECK IN CIRCUIT ...............194/304+
     CHECK OPERATED SWITCH ..........194/239+
  CLOCK ALARM .......................368/244+
     ELECTRICALLY OPERATED ..........368/250+
  CLOSURE POSITION ..................49/13
  CODE SIGNALLING ...................116/18+
  COIN OPERATED .....................194
  CONSUMABLE ELECTRODE ..............314/9
  CONVEYER POWER DRIVEN .............198/502.1+
  COOKING APPARATUS .................99/342+
  DESIGN, INSTRUMENTS ...............D10/104+
  DETONATING (SEE DETONATORS, SIGNAL
     AND INDICATORS)
  DISPENSER COMBINED ................222/23+
  DISTANCE MEASUREMENT COMBINED .....33/740+
     CUTTING COMBINED ...............83/522.11+
     TEARING COMBINED ...............225/18
  DRAWBRIDGE ........................14/49
  DROPPING, ORDNANCE ................89/1.51+
  EARTH BORING COMBINED .............175/40+
  ELECTRIC ..........................340
     ALARMS .........................340/500+
     ARC LAMP .......................314/9
     EXTINGUISHER COMBINED ..........340/289
     FLOAT GAUGE COMBINED ...........73/308
     LAMP SYSTEM ....................315/129+
     NOISE OR UNWANTED SIGNAL
       REDUCTION ....................367/901*
     RADIO ANALOG ...................455
     RADIO DIRECTIVE ................343
     RADIO PULSE OR DIGITAL .........375
     TELEGRAPHY .....................178
     TELEPHONY ......................379
     VEHICLE MOUNTED ................340/425.5+
  ELEVATOR
     ELECTRIC .......................187/100+
     ELECTRIC ANNUNCIATORS ..........187/121+
     MECHANICAL .....................116/64
     MECHANICAL ALARM ...............116/68
  EXPANSIBLE CHAMBER MOTOR COMBINED .91/1
  FIRE ALARM
     EXTINGUISHER COMBINED ..........340/289
     FLAME ..........................340/577+
     SMOKE ..........................340/628+
     SYSTEMS ........................340/287+
     THERMAL CONTROL ................340/584+
  FIRE ESCAPE .......................182/18
  FIRE EXTINGUISHER COMBINED ........169/23
  FISHING ...........................43/16
     AUTOMATIC HOOKER ...............43/17
  FLAGS & FLAGSTAFFS ................116/173+
  FLEXIBLE PANEL COMBINED ...........160/10
  FLOAT GAUGE COMBINED ..............73/307+
  FOGHORN ...........................116/137.R
     ELECTRIC ACTUATION .............340/384.R+
  FOLDER CARRIED INDICIA ............40/359
  FOOT OPERATED LINKAGE .............74/514
  GAS SEPARATOR COMBINED ............55/274+
  ILLUMINATED BY LOCOMOTIVE
     HEADLIGHT ......................362/61+
  INDEX CARD ........................283/36+
  LAMP FOR VEHICLE ..................D26/28
  LAMP OR REFLECTOR .................D10/111+
  LANTERN ...........................362/166+
  LETTER BOX ........................232/34+
  LIFE IN UNDERTAKING ...............27/31
  LIQUID PURIFICATION ...............210/85+
  LOCK CONDITION ....................70/441
  MASTS AND FLAGSTAFFS ..............116/173+
  MECHANICAL ........................116
  MIRROR COMBINED ...................359/515+
  NAUTICAL ..........................116/26+
  ORDNANCE ..........................89/1.51+
  PERIODIC ..........................116/22.R+
  PNEUMATIC DISPATCH ................406/34+
  PRESS COMBINED ....................10/99
  PYROTECHNIC .......................102/335+
     CARTRIDGE ......................102/346
     DESIGN .........................D22/112+
     PARACHUTE FLARES ...............102/337+
     RAILWAY TORPEDOS ...............246/487
     SKYROCKET ......................102/347+
     TORCHES ........................102/336+
  RAILWAY ...........................246
     AUDIBLE AND OTHER SIGNAL .......246/217
     AUDIBLE FOR SWITCH .............246/217
     BLOCK SIGNAL SYSTEMS ...........246/20+
     BRIDGE WARNING .................246/486
     CAB SIGNAL .....................246/167.R+
     CROSSING SIGNAL ON TRAIN .......246/208
     DISPATCHING COMBINED ...........246/2.R+
     DRAWBRIDGE PROTECTION ..........246/118+
     ELECTRIC ACTUATION .............246/218+
     FLUID MOTOR ACTUATION ..........246/257+
     GRADE CROSSING .................246/111+
     HIGHWAY CROSSING ...............246/292+
     HIGHWAY CROSSING ELECTRIC ......246/125+
     INTERLOCKING ...................246/131
     MAIL DELIVERY ..................258/2
     MECHANICAL MOTOR ACTUATION .....246/262+
     PASSENGER AT STATION ...........246/209
     PILOT CAR ......................246/166
     ROADWAY DEFECT .................246/120+
     SIGNAL CAR .....................246/166
     TORPEDO ........................246/487
     TORPEDO PLACING ................246/210+
     TRACTION CABLE .................104/179
     TRAIN DISPATCHING ..............246/2.R
     TRAIN POSITION .................246/122.R+
     TUNNEL WARNING .................246/486
     VEHICLE ENERGY ACTUATION .......246/270.R+
     WHISTLE ........................116/137.R+
  RECORDER ..........................346
  RECORDER COMBINED .................346/17+
  REELING TENSION DEVICE ............242/128
  RUDDER POSITION ...................116/303
  SAFES COMBINED ....................109/38+
  SECURITY INSTRUMENT ...............D10/104+
  SHEET CARRIED INDICIA .............40/360
  SHIPS TELEGRAPH ...................116/21
  SPEAKING TUBES ....................181/19
  STREET TRAFFIC ....................116/63.R+
  SUPPORT STRUCTURE .................248/347
  TELEPHONY
     CENTRAL SYSTEM .................379/242+
     DIVIDED CENTRAL ................379/310+
  THERMOSTATIC REGULATOR COMBINED ...236/94
  TIME ..............................368/243+
  TIRE DEFLATION ....................116/34.R
     ELECTRIC .......................340/442
  TORPEDO FOR RAILWAY ...............246/210+
     PLACING MECHANISM ..............246/487
  TRACK SANDER COMBINED .............291/17
  TRAFFIC ...........................116/63.R
     ELECTRIC .......................340/907+
  TYPEWRITER RIBBON .................40/249+
  UNDERWATER SOUND WAVES ............367/131+
  VEHICLE ...........................116/28.R+
  WATCHES ALARM .....................368/244
  WATER HEATER ......................126/388
  WATER HEATER VESSEL COMBINED ......126/388

SIGNALING TEACHING .................. 434/223


SIGNATURE GATHERERS AND CONVEYORS
  CONVEYOR POWER DRIVEN .............198/644
  MACHINE FOR WRITING SEVERAL .......33/23.6
  SHEET ASSOCIATING .................270/54+
  SIGNING MACHINE ...................D18/21

SILASTIC T M (SEE SYNTHETIC RESIN OR
 NATURAL RUBBER)

SILAZANES ........................... 568/410+

SILENCER (SEE INSULATING, SOUND;
 MUFFLE; NOISE DEADENING)
  FIREARM AND GUN ...................89/14.4
  MUFFLER FOR FIREARM ...............181/223

SILENT BUTLER ....................... D32/74

SILICA .............................. 423/335
  ABRASIVE COMPOSITIONS CONTAINING ..51/308
  ABSORBENTS CONTAINING .............502/407+
  AEROGEL ...........................106/287.34
  CATALYSTS CONTAINING ..............502/232+
  CEMENT CONTAINING .................106/737
  GEL ...............................423/338
     DISPERSING OR STABILIZING
       AGENT COMBINED ...............252/315.1
  GLASS COMPOSITIONS CONTAINING .....501/53+
  GLASS MANUFACTURING ...............65
  LIME COMPOSITIONS CONTAINING ......106/796+
  LUBRICANTS CONTAINING .............252/9+

SILICANE ............................ 556/465+


SILICATES & SILICON COMPOUNDS,        423/324+
 INORGANIC ..........................423/324+
  ABRASIVE COMPOSITIONS CONTAINING ..51/308
  ABSORBENTS CONTAINING .............502/407+
  CATALYSTS CONTAINING ..............502/232+
  COATING OR PLASTIC COMPOSITIONS
     CONTAINING
     ALKALI METAL ...................106/286.7+
     CARBIDE ........................501/87+
     GLASS ..........................501/11+
     LIME COMBINED ..................106/792+
     OPACIFIERS FOR ENAMELS .........106/312
     PIGMENTS FILLERS AGGREGATES ....106/400+
     PORTLAND CEMENT TYPE ...........106/713+
     PORTLAND CEMENT TYPE MAKING ....106/739+
     REFRACTORIES ...................501/94+
     SLAG ...........................106/789+
  DETERGENTS CONTAINING .............252/89.1+
  DYEING ............................8/523+
  FERTILIZERS CONTAINING ............71
  HYDROFLUOSILICIC ACID .............423/341
  LUBRICANTS CONTAINING .............252/9+
  ORGANIC COMPOUNDS .................556/400+
     ESTERS .........................556/482+
  SILICA ............................423/335
  SILICOFLUORIDES ...................423/324

SILICIC ACID ........................ 423/325

SILICOFLUORIC ACID .................. 423/341

SILICOFLUORIDES ..................... 423/324+

SILICOL ............................. 556/463


SILICON ............................. 423/348
  ALLOYS
     ALUMINUM .......................420/548
     ALUMINUM COPPER ................420/537
     COPPER .........................420/490
     METALLIC .......................420/578
  CARBIDE ...........................423/345
  FERRO PRODUCING ...................420/578
  MISC  CHEMICAL MANUFACTURE ........156/DIG.64
  ORGANIC COMPOUNDS IN COMPOSITIONS .106/287.1+
  POLYMERS (SEE SYNTHETIC RESIN OR NATURAL RUBBER)
  ROOM-TEMPERATURE CURABLE ..........528/901*

SILICON STEEL ....................... 148/110+

SILICONE ............................ 556/465+
  COMPOSITIONS ......................106/287.13

SILILATION OF POLYMERS .............. 525/100+

SILK
  ARTIFICIAL MAKING
     APPARATUS ......................425/66
     APPARATUS ......................425/67+
     APPARATUS ......................425/76
     APPARATUS ......................425/382.2
     PROCESSES ......................264/165+
  CHEMICAL TREATMENT ................8/128.1+
  DEGUMMING .........................8/138
  FERMENTATIVE TREATMENT ............435/268
  LIBERATING ........................19/3
  SCREEN PRINTING ...................101/114+
     PROCESS ........................101/129
  THREAD FINISHING ..................28/217+

SILKWORM CULTURE .................... 119/270


SILL ................................ 52/204.1
  RAILWAY CAR .......................105/396+
     WEATHERSTRIPS ..................49/303+

SILLIMANITE
  CERAMIC CONTAINING ................501/141+
  PORCELAIN CONTAINING ..............501/141+
  REFRACTORY CONTAINING .............501/128+

SILOS
  CIRCULAR ..........................52/245+
  COMPACTING ENSILAGE ...............10/65+
  PORTABLE, & MEANS FOR ERECTING ....414/919*
  PRESTRESSED .......................52/223.3+
  WITH PORT .........................52/192+

SILOXANES ........................... 556/450+
  RESINOUS SOLIDS (SEE ALSO SYNTHETIC
     RESIN OR NATURAL RUBBER) .......528/10+

SILVER
  ALLOYS ............................420/501
  CHEST OR BOX FOR ..................D03/75
  COMPOSITE METAL STOCK .............428/673
  ELECTRODEPOSITION .................205/263
  ELECTROLYTIC SYNTHESIS ............204/109+
     MERCURY ALLOY ..................204/126+
  HYDROMETALLURGY ...................75/711+
  MISC  CHEMICAL MANUFACTURE ........156/DIG.101
  ORGANIC COMPOUNDS .................556/110+
     PROTEINS .......................530/400
  PYROMETALLURGY ....................75/634+

SILVERWARE
  CHEST OR BOX FOR ..................D03/75
  SORTER ............................209/926*
  TRAY OR CONTAINER .................206/557


SIMULATIONS
  ARTICLE DISPENSING ................221/24
  ARTIFICIAL INTELLIGENCE ...........395/920*
  CABINETS WITH .....................312/204
  DISPLAY ...........................40/538+
  MATERIAL DISPENSING COMBINED ......222/80+
  PYROTECHNICS ......................102/335
  SUPPORTS DIGEST ...................248/908*
  TOYS ..............................446
  VELOCIPEDES .......................280/827+

SINE BAR ............................ 33/536+

SINEW REMOVING ...................... 452/172

SINGEING
  CLOTH FINISHING ...................26/3+
  ELECTRIC BURNER ...................219/223+
  HAIR COMBS FOR ....................132/118
  HOGS ..............................452/73
  THREAD FINISHING ..................28/239
  WARPS .............................28/174

SINGLE GRID TWIN PLATE CONTROL TUBE . 313/303

SINGLE ROLL CRUSHER ................. 241/221+

SINGLETREE
  HORSE DETACHER
     FROM THILL OR EVENER ...........278/32
     TRACES FROM SINGLETREE .........278/24+


SINK SEE RECEPTACLES ................ 4
  CABINET COMBINED ..................312/228
  DESIGN ............................D23/284+
  DISAPPEARING BOWL .................4/DIG.2
  DRAIN BOARD OR TRAY ...............D32/56
  LINING MAT ........................D32/57
  PLUMBING FOR SINK TRAPS ...........4/679+
  STRAINERS AND STOPPERS ............4/286+
  STRUCTURE .........................4/619+
  TUB COMBINED ......................4/553+

SINKER
  FISHING TYPE ......................43/43.1+
     DESIGN .........................D22/145
  KNITTING MACHINE ..................66/104+
  TRAPS .............................43/68

SINKHEAD ............................ 249/106

SINTERING
  APPARATUS, ORE ....................266/176
     STATIONARY GRATE ...............266/185
  CELLULAR SYNTHETIC RESIN OR NATURAL
     RUBBER PRODUCT .................521/919*
  CERAMIC COMPOSITION ...............501/1
  CLAY ..............................264/56+
  GLASS GRANULES ....................65/18.1
     APPARATUS ......................65/144
  ORES ..............................75/746+
  PORTLAND TYPE CEMENT MAKING .......106/739+
  POWDER METALLURGY
     PROCESSES ......................419
       LIQUID PHASE .................419/47
     PRODUCTS .......................75/228+
  PROCESSES .........................432/1+
     LIME GYPSUM CEMENT .............106/765+

SINUSOIDAL GENERATOR
  ELECTRONIC TUBE TYPE OSCILLATOR ...331
  GENERATOR STRUCTURE ...............310
  GENERATOR SYSTEM ..................322


SIPHON
  ACETYLENE GENERATOR ...............48/17
  BOILER ............................122/68
  BOTTLE ............................215/4+
     DESIGN .........................D07/300.1
     FILLING ........................141/14+
  BOWL ..............................4/421+
  CODE RECORDER .....................178/91
  DISPENSERS ........................222/416
     DISCHARGE ASSISTANT COMBINED ...222/204
  FLUID FLOW METER ..................73/222
  FLUID HANDLING ....................137/123+
     AUTOMATIC ......................137/132+
  LUBRICATOR ........................184/85
  PLUMBING ..........................137/247.11+
  SYRINGES ..........................604/131+
  WATER CLOSET
     SIPHON BOWL ....................4/421+
     TANK ...........................4/368+

SIREN ............................... 116/147
  DESIGN ............................D10/120
  ELECTRIC ..........................340/405
  TOY ...............................446/205

SIRUP SEE SYRUPS

SIZING (SEE ASSORTER)
  BREAD, PASTRY AND CONFECTIONS .....99/352+
  CHAIN MAKING ......................59/29
  COATING COMPOSITIONS
     NATURAL RESIN CONTAINING .......106/238
     PROTEIN CONTAINING .............106/124+
     STARCH CONTAINING ..............106/210+
  COATING PROCESSES .................427
  DYEING PROCESSES COMBINED .........8/495+
  FINGER RING FORMING AND ...........29/8
  HAT MAKING ........................223/10
  PAPER TUBE MAKING .................493/269
  TEXTILES CHEMICAL MODIFICATION OF .8/115.6
  WARP THREADS ......................28/178


SKATE AND SKATERS APPLIANCES ........ 280/841+
  CLAMP FOR SHARPENING BY ABRADING ..51/228
  DESIGN ............................D21/224+
  ICE, POWERED ......................180/180+
  ROLLER, POWERED ...................180/180+
  SHARPENING BY CUTTING .............76/83
  SKATERS SUPPORTS ..................482/51+
     ROUNDABOUT TYPE ................472/1+
     WITH SEAT ......................297/5+
       AND RUNNERS OR WHEELS ........280
  SKATING SURFACE FOR ...............472/88+
  SNOW ..............................280/600
     DESIGN .........................D21/224+
  STRAP .............................280/11.3
  WATER .............................441/65+
  WHEELS FOR ........................301/5.3+

SKEEBALL GAME ....................... 273/352

SKEIN
  AXLES .............................301/134+
  FLUID TREATING PACKAGE ............8/155.2
  REELING ...........................441/26+
     HOLDERS ........................242/127

SKEINING ............................ 28/291

SKELETON
  FIGURE TOYS .......................446/373+
  KEYS ..............................70/394
  PLUG VALVE ........................251/310+
  TOWERS ............................52/651.1+

SKELPING METAL ...................... 72/176+

SKEWER .............................. 99/419+


SKI (SEE AQUAPLANE; SLED) ........... 280/601+
  APPAREL DESIGN ....................D02/744+
  BINDINGS ..........................280/611+
     CLAMP TYPE HAVING PLURAL
       DIVERSE AXES CLAMPSPS ........280/DIG.12
     CONTROLLED BY SKIER POSTION
       OR BY REMOTE CONTROL .........280/DIG.13
  BRAKE .............................280/604+
  CARRIERS ..........................224/917*
  CARRIERS, HAND ....................294/147
     CASE ...........................206/315.1
  CLAMP .............................280/814
  DESIGN ............................D21/229+
  EXERCISE DEVICE ...................482/71
  HANDLE OR GRIP DESIGN .............D08/DIG.6
  POLES AND STICKS ..................280/819+
  PRESSES ...........................280/815
  SIMULATORS ........................280/842
  SLIDE .............................472/90+
  SNOW, IE, NON-WATER, POWERED ......180/180+
     SHOE FASTENERS .................280/611+
     TRAIL GROOMER ..................37/219+
  TEACHING SKIING ...................434/253
  WATER SKIS ........................441/68+
     TOW LINE .......................114/253+
  WORK HOLDER FOR ...................269/906*

SKID ................................ 193/41
  AIRCRAFT LANDING GEAR .............244/108
  ANTI
     ARMORED RESILIENT TIRE .........152/167+
     BOOTS AND SHOES ................36/59.R+
     DEVICES FOR RESILIENT TIRES ....152/208+
  CHAIN APPLIER .....................81/15.8
  INVERTED VEHICLE ..................280/32
  PLATFORM ..........................108/51.1+
  RAILWAY
     CAR STOP .......................104/260
     TRUCK ..........................105/216
  SKIDDING
     TRAVERSING HOIST ...............212/167
  SKIDWAY ...........................193/38+
     HOISTING ROPE COMBINED .........414/571
     RAILWAY ........................104/134+
     VEHICLE LOADING CONVEYOR .......414/537+

SKILLET ............................. 126/373+


SKIMMER
  CONCENTRATING EVAPORATOR ..........159/42
  FERMENTATION APPARATUS COMBINED ...435/287+
  FLOATING SEPARATOR ................210/242.1
  FROTH FLOTATION ...................210/221.1
  GRAVITATIONAL SEPARATOR ...........210/513+
  STRATIFIERS .......................209/493

SKIMOBILE ........................... 180/182

SKIN DIVING (SEE DIVING APPARATUS)

SKINNER
  ANIMAL OR FISH ....................452/125+
  NUT ...............................99/584+

SKINS AND LEATHER ................... 69
  CARROTING OF FUR ..................8/112
  CUTTING FOR GRAFTING ..............606/132
     DYEING .........................8/436+
  ELECTROLYTIC TREATMENT PROCESSES ..204/135
  FLUID OR CHEMICAL TREATMENT .......8/94.1R+
     MANIPULATIVE ...................8/150.5
  FORMING INTEGRAL SKIN, PLASTIC
     AND NON-METALLIC ...............264/45.5+

SKIP
  CHUTE FOR ROTARY DRUM .............193/10
  FURNACE CHARGING ..................414/178
     ACCUMULATING MEANS BEFORE
       RELEASE ......................414/168
  LOADING OR UNLOADING ..............414/639+
  MORTAR MIXER FEEDING ..............366/39
     LIQUID AND .....................366/36
  VERTICALLY SWINGING LOAD HANDLER ..414/680+

SKIPPING
  EXERCISING DEVICES ................482/81+
  FIGURE TOYS .......................446/311+
     ROPE SKIPPING ..................446/307

SKIRT
  CHRISTMAS TREE BASE ...............D11/130
  ELECTRICAL INSULATORS .............174/80
  GARMENT ...........................2/211+
     APRON ..........................2/48+
     DESIGN .........................D02/851+
     FORMS ..........................223/68+
     HANGERS ........................223/95+
     HEM ETC MARKERS ................33/9.R+
     HOOP SKIRT MAKING ..............223/6
     PROTECTORS .....................2/47
     PROTECTORS DESIGN ..............D02/860+
     UNION TYPE .....................2/71+
  MACHINE PISTONS ...................92/208+

SKIVING
  LEATHER ...........................69/9+
  SHOE
     TOE AND HEEL STIFFENERS ........12/62+
     UPPER MACHINES .................12/58

SKULLCAPS ........................... D02/865+

SKYLIGHT ............................ 52/200
  CLERESTORY ........................52/18

SKYROCKETS .......................... 102/347+

SKYWRITING .......................... 40/213