| Class 62 | REFRIGERATION |
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![[List of Pre Grant Publications for class 62 subclass 1]](../as.gif) | ![[List of Patents for class 62 subclass 1]](../ps.gif) | 1 | CONSUMABLE PRODUCTS PRODUCED BY COOLING |
| | 3.1 | USING ELECTRICAL OR MAGNETIC EFFECT |
| | 3.2 |  Thermoelectric; e.g., peltier effect |
| | 3.3 |  Heat pump, selective heating and cooling |
| | 3.4 | Including dehumidifying and condensate handling |
| | 3.5 | Made with flexible heat exchanger material; e.g., blanket, wearing apparel, etc. |
| | 3.6 | Interior of enclosure cooled; e.g., refrigerator |
| | 3.61 |  Having vehicle feature; e.g., cooling cart, car, truck, boat, etc. |
| | 3.62 | Portable, having transporting feature; e.g., handle |
| | 3.63 | Icemaker |
| | 3.64 | Beverage dispenser |
| | 3.7 | Including specific circuitry or heat exchanger material |
| | 4 | CHEMICAL REACTION OR SOLIDS DISSOLVING |
| | 5 | VORTEX TUBE, E.G., RANQUE |
| | 6 | GAS COMPRESSION, HEAT REGENERATION AND EXPANSION, E.G., STIRLING CYCLE |
| | 7 | UTILIZING FUEL AS REFRIGERANT |
| | 600 | CRYOGENIC TREATMENT OF GAS OR GAS MIXTURE |
| | 601 | Solidification |
| | 606 | Liquefaction |
| | 607 | Hydrogen |
| | 608 | Helium |
| | 51.2 | Utilizing Joule-Thomson effect |
| | 611 | Natural gas |
| | 612 | Multicomponent cascade refrigeration |
| | 613 | Compression, expansion, and condensation |
| | 614 | Heat exchange with liquid cryogen |
| | 615 | Air |
| | 616 | Heat exchange with liquid cryogen |
| | 617 | Separation of gas mixture |
| | 618 | Natural gas |
| | 619 | Compression, expansion, and condensation |
| | 620 | Distillation |
| | 621 |  Flowline expansion engine |
| | 623 | External refrigeration circuit |
| | 624 | Membrane |
| | 625 | Liquid contact |
| | 626 | Solid sorption |
| | 627 | Dephlemation |
| | 628 | Automatic control |
| | 629 | Solidification |
| | 630 | Plural columns |
| | 632 | Liquid contact |
| | 636 | Sorption |
| | 637 | Solidification |
| | 639 | Helium |
| | 640 | Air |
| | 657 | Automatic control |
| | 45.1 | STORAGE OF SOLIDIFIED OR LIQUIFIED GAS (E.G., CRYOGEN) |
| | 46.1 | With sorbing or mixing |
| | 47.1 | With conservation of cryogen by reduction of vapor to liquid within storage receptacle |
| | 48.1 | With vapor discharged from storage receptacle |
| | 48.2 | And subsequently restored to receptacle as liquid |
| | 48.3 | And subsequently used to cool receptacle |
| | 48.4 | Discharge caused by ignition of combustible gas |
| | 49.1 | With measuring |
| | 50.1 | Liquified gas transferred as liquid |
| | 50.2 | With vaporizing of liquified gas downstream of storage |
| | 50.3 | Energy converted to work (e.g., used to drive prime mover) |
| | 50.4 | Operates valve which controls flow of liquid |
| | 50.5 | In phase separator |
| | 50.6 | Specific pump structure |
| | 50.7 | Specific conduit, valve, or coupling structure |
| | 51.1 | Including cryostat |
| | 52.1 | Spraying of cryogen |
| | 53.1 | Underground or underwater storage |
| | 53.2 | Storage in modified vehicle (e.g., ship, truck, etc.) |
| | 54.1 | Cryogen stored in both phases (e.g., as slush or gel) |
| | 54.2 | Controlled conversion of solidified gas to another phase |
| | 54.3 | Storing solidified gas |
| | 55.5 | LOW PRESSURE COLD TRAP PROCESS AND APPARATUS |
| | 56 | PROCESSES |
| | 57 | Suspending in upwardly directed current |
| | 532 | Fractionally solidifying a constituent and separating the same |
| | 533 | Including direct contact with added refrigerant |
| | 534 | Liquid refrigerant converted to vapor phase during cooling |
| | 535 | Spent refrigerant vapor used in direct contact to melt solidified component or heat product liquid |
| | 536 | Refrigerant remains liquid during cooling |
| | 537 | Utilizing a constituent of the original mixture or solution as refrigerant |
| | 538 | Solidifying or purifying in a pulsed column or using sonic vibration |
| | 540 | With measured parameter responsive control |
| | 541 | With separated constituent recycle |
| | 542 | Using melted solid to wash solidified constituent |
| | 543 | With squeezing or compression of solidified component |
| | 544 | With stirring, agitating or scraping of the solidification zone |
| | 59 | Accumulating holdover ice in situ |
| | 60 | Packaging |
| | 61 | Utilizing motion of vehicle |
| | 62 | Treating an article |
| | 63 | Moving through cooling zone during cooling |
| | 64 | By contacting with liquid |
| | 65 | Diverse sequential temperatures, e.g., precooling |
| | 66 | Congealing flowable material, e.g., ice making |
| | 67 | With filtering or gravitational separating |
| | 68 | Agitating |
| | 71 | Removing product from congealing surface |
| | 74 | Spraying or dripping |
| | 75 | Sequential stages, e.g., composite block making |
| | 76 | With preliminary refrigerant manufacturing |
| | 77 | Assembling, charging, or repairing of refrigeration producer |
| | 78 | Deodorizing, antisepticizing or providing special atmosphere |
| | 79 | Exchanging heat between plural systems, e.g., disparate |
| | 80 | Defrosting or frost inhibiting |
| | 83 | Preventing slugging to compressor |
| | 84 | Lubricant handling |
| | 85 | Separating or preventing formation of undesirables |
| | 86 | Reducing pressure on compressed gas |
| | 89 | Circulating external gas |
| | 90 | With reheating |
| | 91 | With adding of moisture |
| | 93 | With removing of moisture |
| | 95 | Plural cooling, e.g., precooling by exhaust |
| | 96 | Indirect cooling using closed circuit heat transfer fluid |
| | 97 | Combining streams having diverse temperatures |
| | 98 | Fluid external of refrigeration producing cycle |
| | 100 | Vacuumizing an open outlet chamber |
| | 101 | Evaporation induced by sorption |
| | 102 | Using diverse refrigerants |
| | 103 | With modulated flow rate of fluid |
| | 106 | Intermittent operating of generation and sorption cycle |
| | 107 | With absorption liquid circulation aided by system generated pressure |
| | 108 | With liquid refrigerant transfer to evaporator against gravity |
| | 109 | Cooling by evaporation of refrigerant from sorption solution |
| | 110 | With diffusion of refrigerant into inert gas |
| | 112 | Utilizing particular refrigerant and/or sorbent materials |
| | 113 | Transferring heat between diverse function portions of refrigeration cycle |
| | 114 | Employing diverse materials or particular material in refrigeration circuit |
| | 115 | Compressing, condensing and evaporating |
| | 116 | Utilizing motive energy of fluid to compress |
| | 117 | Dividing refrigerant flow, e.g., bypass parallel units |
| | 118 | Pumping fluid in closed circuit |
| | 119 | Condensing and evaporating |
| | 120 | Spaced cooling steps |
| | 121 | Gas and liquid contact |
| | 122 | Combining fluids having diverse temperatures |
| | 123 | SEPARATOR FOR SOLIDIFIED CONSTITUENT OF LIQUID MIXTURE |
| | 125 | WITH INDICATOR OR TESTER |
| | 126 | Operatively correlated with automatic control |
| | 127 | Diverse function indicators or testers |
| | 128 | Atmospheric condensation accumulation, e.g., frost |
| | 129 | Condition sensing |
| | 131 | Position or extent of motion of movable element |
| | 132 | AUTOMATIC CONTROL |
| | 133 | Responsive to vehicle body motion or traction |
| | 135 | By congealed removable product condition |
| | 139 | By accumulation on freezing surface, e.g., ice |
| | 141 | Of closed system sorbent type |
| | 142 | Discontinuous operation of refrigerant or sorbent container unit |
| | 148 | Of heating means |
| | 149 | Withdrawing or adding refrigerant from or to normally closed system |
| | 150 | Preventing, removing or handling atmospheric condensate |
| | 157 | Time or program actuator |
| | 159 | Selective heating or cooling |
| | 161 | With correlated manual or external operator and condition sensing means, e.g., cutoff or reset |
| | 162 | Manual initiate with sensor terminate |
| | 163 | Selective |
| | 164 | Manual reset or sensor operates additional element |
| | 165 | Solidified gas |
| | 166 | Diverse control or response |
| | 167 | Of heater, heat transmitter or secondary fluid |
| | 168 | By temperature |
| | 169 | Vacuumized chamber with open outlet |
| | 171 | Gas-liquid contact cooler, fluid flow |
| | 172 | Air compessor, cooler and expander |
| | 173 | Of external fluid reheating |
| | 174 | Trapping and discharging refrigerant batches |
| | 175 | Diverse, cascade or compound refrigeration-producing system |
| | 176.1 | Humidity sensor |
| | 176.2 | Having defrost control related to humidity |
| | 176.3 | Controlling variable compressor capacity |
| | 176.4 | Controlling gas-liguid contactor for air |
| | 176.5 | Control of air heater, e.g., reheat pump |
| | 176.6 | Plus air temperature sensor exerting a control |
| | 177 | Of external fluid or means |
| | 178 | Diverse control or response |
| | 183 | Cooling fluid for heat rejecter, e.g., condenser |
| | 185 | Indirect heat transfer liquid, e.g., brine |
| | 186 | Air controller or director |
| | 188 | By lever, e.g., float-controlled valve |
| | 189 | By fluid flow, e.g., check valve |
| | 190 | Refrigeration producer |
| | 191 | Of or by jet-type compressor |
| | 192 | Lubrication |
| | 195 | Impurity removal |
| | 196.1 | Bypass, e.g., compressor unloading |
| | 196.2 | For plural compressor cylinders |
| | 196.3 | Direct bypass of compressor |
| | 196.4 | Condensor bypass |
| | 197 | Of expansion zone |
| | 201 | By external cooled liquid or holdover |
| | 202 | Including external thermal source modifying sensor action |
| | 203 | Plural refrigerating producing elements and plural sensors |
| | 207 | Diverse function refrigeration elements controlled by single sensor |
| | 208 | Single refrigeration producer controlled by plural sensors |
| | 209 | Compensating or modifying |
| | 213 | Alternative or selective sensors |
| | 214 | Single sensor mounted or formed to respond to plural conditions, e.g., compensators |
| | 216 | Of or by evaporation zone |
| | 217 | Back flow or pressure regulator |
| | 218 | Valve or restrictor by liquid lever |
| | 222 | Of expansion valve or variable restrictor |
| | 226 | Compressor or its drive controlled |
| | 228.1 | Compressor or its drive controlled |
| | 231 | TIME OR PROGRAM ACTUATOR |
| | 235 | RINK |
| | 235.1 | UTILIZING SOLAR ENERGY |
| | 236 | WITH ALTERNATELY USABLE ENERGY SOURCES |
| | 237 | SEPARABLE AMBULANT COOLED ENCLOSURE AND POWER OR COOLING SOURCE |
| | 238.1 | DISPARATE APPARATUS UTILIZED AS HEAT SOURCE OR ABSORBER |
| | 238.2 | With vortex tube, thermoelectric, Stirling or air cycle |
| | 238.3 | With sorption |
| | 238.4 | With power vapor generator |
| | 238.5 | With distillation, ice maker, or freeze separation |
| | 238.6 | With vapor compression system |
| | 239 | WITH VEHICLE FEATURE |
| | 240 | Ship |
| | 241 | Utilizing motion of vehicle |
| | 243 | Vehicle contained common power supply |
| | 244 | Occupant-type vehicle |
| | 245 | Melt control |
| | 246 | DISPLAY TYPE |
| | 247 | With means dispersing or evaporating liquid into atmosphere |
| | 248 | Means removing or preventing condensate on transparent panel |
| | 249 | With feature extraneous to cabinet or cooler |
| | 250 | With material conveyer or transporter, e.g., for ice or goods |
| | 251 | Stepped, e.g., shelves |
| | 252 | Plural storage compartments |
| | 255 | With air controlling or directing means |
| | 257 | Bottom cooling means, e.g., cooled floor |
| | 258 | WITH MEANS FORMING NON-COOLED WORK SURFACE, E.G., COUNTER, TABLE, SIDEBOARD |
| | 259.1 | STRUCTURAL INSTALLATION |
| | 259.2 | With electrical component cooling |
| | 259.3 | With body applicator |
| | 259.4 | With evaporative type cooler |
| | 260 | Geographic, e.g., subterranean feature |
| | 261 | Article of furniture, e.g., bed cover or canopy |
| | 262 | Window connected or mounted |
| | 263 | Vertical partition or wall mounting feature |
| | 264 | WITH ILLUMINATING OR RADIANT ENERGY MEANS |
| | 265 | COMPARTMENT ACCESS OR USE AND AIR BLOCKING |
| | 267 | INTERLOCKED DIVERSE FUNCTION ELEMENTS |
| | 268 | VACUUMIZED CHAMBER WITH OPEN VAPOR OR GAS OUTLET |
| | 271 | ATMOSPHERE AND SORBENT CONTACTING TYPE |
| | 272 | WITH MEANS PREVENTING OR HANDLING ATMOSPHERIC CONDENSATE RELATIVE TO HEAT ABSORBER |
| | 273 | Operating on insulation, e.g., vent to refrigerated compartment |
| | 274 | With means to add moisture to cooled space |
| | 275 | By external heater |
| | 277 | Means utilizing heat developed by refrigeration producer |
| | 278 | Bypassing or reversing internal fluid flow |
| | 279 | Means conducting atmospheric condensate to heat rejecter |
| | 281 | With porous or foraminous atmospheric condensate receiver |
| | 282 | Means contacting heat absorber with fluid strange to system |
| | 283 | Moisture condensing means distinct from principal heat absorber |
| | 284 | Wiper or scraper |
| | 285 | Retainer or flow director for atmospheric condensate |
| | 292 | WITH MEANS FOR CHARGING CLOSED REFRIGERATION PRODUCING SYSTEM |
| | 293 | HAND MANIPULABLE TOOL |
| | 294 | CONTAINER CUTTER OR PUNCH-TYPE OPENING MEANS |
| | 295 | RESILIENTLY SUPPORTED POWER AND/OR HEAT REJECTING ELEMENT |
| | 296 | MUFFLER OR SOUND DAMPENER |
| | 297 | EXTERNAL SUPPORT FOR REFRIGERATOR HOUSING |
| | 298 | WITH REPAIR, ASSEMBLY OR DISASSEMBLY MEANS |
| | 299 | Detachable valve and coupling |
| | 300 | Means releasing mold from support |
| | 302 | Sliding or rolling on guide means |
| | 303 | WITH CLEANING MEANS FOR APPARATUS |
| | 304 | MATERIAL COOLING MEANS INCLUDING GAS-LIQUID CONTACTOR |
| | 305 | Cooling heat rejector of refrigeration producer |
| | 306 | Means feeding gas into pressurized receiver |
| | 307 | Submerged gas inlet |
| | 309 | Gas recirculated relative to enclosure |
| | 310 | Fluid recirculating means |
| | 311 | Diverse treating means |
| | 314 | With gas forcing or directing means |
| | 315 | Porous wall liquid container or flow line |
| | 316 | Porous cover member |
| | 317 | WITH SEPARATOR-CLARIFIER FOR COOLED FLUID OR ICE-MELT |
| | 320 | WITH COMMINUTOR OR CUTTER |
| | 322 | DISPARATE SERIALLY ARRANGED PRODUCT TREATING APPARATUS |
| | 323.1 | WITH INTERNAL-COMBUSTION ENGINE |
| | 323.2 | With cooling apparatus other than gas compressor |
| | 323.3 | With electrical motor drive |
| | 323.4 | With clutch or variable speed transmission controlling compressor drive |
| | 324.1 | REVERSIBLE, I.E., HEAT PUMP |
| | 324.2 | With cooling apparatus other than gas compressor |
| | 324.3 | With product treatment |
| | 324.4 | With refrigerant collection and intermittent discharge |
| | 324.5 | With atmospheric condensate removal or prevention |
| | 324.6 | With flow control or compressor details |
| | 325 | External fluid flow reversed |
| | 326 | CONVERTIBLE |
| | 330 | WITH REFRIGERANT OR COOLANT MANUFACTURING MEANS |
| | 331 | COMBINED |
| | 332 | DIVERSE SYSTEMS, E.G., ICE AND MECHANICAL |
| | 335 | PLURAL PAIRED DIFFERENT FUNCTION REFRIGERATION PRODUCING ELEMENTS, E.G., CASCADE |
| | 336 | MATERIAL HANDLERS OF DIVERSE TYPES |
| | 337 | COOLED ARTICLE STORAGE COMPARTMENT AND COOLED ISOLATED MATERIAL HANDLER |
| | 340 | MEANS PRODUCING SHAPED OR MODIFIED CONGEALED PRODUCT |
| | 341 | With article press means |
| | 342 | With means for working congealing material, e.g., beater |
| | 344 | With product receiving and storing means |
| | 345 | Freezing surface mounted for movement during freezing |
| | 347 | With raw material projector, e.g., spray |
| | 348 | With means to precool or recirculate raw material |
| | 349 | Thawing means |
| | 350 | Attached to hand-manipulable mold |
| | 351 | Electrical heater |
| | 352 | Means using refrigerant or coolant as heating fluid |
| | 353 | Heat absorber with product remover |
| | 356 | Mold with means to absorb heat, e.g., brine tank |
| | 371 | PORTABLE, COMMODITY-CONTAINING |
| | 373 | LIQUID CONTACTING DISCRETE COMMODITY |
| | 377 | ARTICLE HOLDER MOUNTED ON DOOR OR PIVOTED PARTITION |
| | 378 | ARTICLE MOVING MEANS |
| | 379 | Solid refrigerant |
| | 380 | Continuous longitudinal-type conveyor |
| | 381 | Rotary about fixed axis, e.g., rotary shelf or scraper |
| | 382 | Drawer, tray or track-guided type; horizontally movable |
| | 383 | MOVABLE THERMAL MEANS VARYING HEAT TRANSMISSION |
| | 384 | COOLER UTILIZING SOLIDIFIED GAS |
| | 385 | Sublimed gas entering insulation or within hollow wall |
| | 386 | Means cooling withdrawable liquid |
| | 387 | External as circulator or director |
| | 388 | Means dispersing sublimed gas into cooled enclosure |
| | 389 | WITHDRAWABLE LIQUID, E.G., DISPENSER |
| | 390 | With plural liquid outlets or sources, e.g., distributing system |
| | 391 | With withdrawn liquid receiver |
| | 392 | With agitator for withdrawable liquid |
| | 393 | With intermediate indirect heat transfer fluid container or conductor |
| | 394 | Refrigerant evaporator surrounding or within a container |
| | 396 | In indirect heat exchanging relationship to coolant |
| | 401 | AIR COMPRESSOR, COOLER AND EXPANDER TYPE |
| | 404 | GAS CONTROLLER OR DIRECTOR |
| | 405 | Isolated gas compartment, e.g., cold air jacket |
| | 406 | Gas passage over or through indirect heat-transfer container or holdover |
| | 407 | Cooled gas directed relative to cooled enclosure |
| | 408 | With adjustable gas flow controller |
| | 410 | Exterior port, i.e., ventilating |
| | 413 | Means verging gas streams within storage space |
| | 417 | With imperforate partition forming storage compartments |
| | 418 | Foraminous gas distributor flow connected to cooler unit |
| | 419 | Gas forcing means |
| | 420 | Directed relative to ice container |
| | 425 | Gas flow through ice compartment contacting ice |
| | 426 | Gas forcing means, e.g., cooler unit |
| | 430 | INTERMEDIATE FLUID CONTAINER TRANSFERRING HEAT TO HEAT ABSORBER OR HOLDOVER |
| | 431 | Side-by-side or superimposed cooled compartments |
| | 432 | Different temperature arrangements |
| | 433 | With top access to each compartment, e.g., ice cream cans |
| | 434 | Flow line connected transfer fluid supply and heat exchanger |
| | 435 | With indirect fluid pump or agitator |
| | 436 | Connected distinct sections for indirect fluid |
| | 437 | Non-liquid heat accumulator |
| | 438 | Forming cooled storage compartment |
| | 439 | Unitary jacket surrounding coolant line |
| | 440 | COOLED ENCLOSURE |
| | 441 | Plural cooled compartments |
| | 442 | Coolers in parallel for plural compartments |
| | 443 | Cooler integral with or forming dividing wall |
| | 447 | Insulating dividing wall |
| | 448 | Movable unit of refrigeration producing assembly |
| | 451 | Flowing coolant container covered by insulation means or within hollow wall of enclosure |
| | 452 | With heat rejecting element enclosure or cooling feature |
| | 457.1 | Portable receptacle |
| | 457.2 | With holdover material |
| | 457.6 | Cooled serving dish |
| | 457.7 | Picnic/lunch box type cooler |
| | 457.8 | Wine server/cooler |
| | 457.9 | Cooled by means other than ice (e.g., mechanical, electrical, absorption, cryogenic, etc.) |
| | 458 | Access surface open to atmosphere |
| | 459 | Ice support, e.g., container |
| | 460 | Flowing ice melt heat exchanger within cooled enclosure |
| | 462 | Valve or trap within ice melt flow line |
| | 463 | Partially surrounding storage compartment |
| | 464 | Top access to ice compartment |
| | 465 | With particular internal element support |
| | 467 | REFRIGERATION PRODUCER |
| | 468 | With lubricant handling means |
| | 474 | With refrigerant treater |
| | 476 | Sorbent type |
| | 477 | Absorber-still, e.g., intermittent |
| | 478 | Evaporator-condenser unit |
| | 479 | With means returning sorbent from evaporator |
| | 480 | With solid sorbent |
| | 481 | With sorber-generator cooling means |
| | 483 | Pump means forcing gas or vapor relative to sorber |
| | 484 | Vapor-liquid contact in reabsorber forming liquid refrigerant |
| | 485 | Means causing cooling fluid contact with sorber and/or condenser |
| | 486 | Means cooling liquid refrigerant flow line to evaporator |
| | 487 | Internally generated pressure or capillary means moving sorption liquor |
| | 489 | Means attempering flow line between sorber and generator |
| | 490 | Inert gas |
| | 491 | Gas-liquid contactor within inert gas circuit |
| | 493 | Means cooling inert gas flow line from sorber to evaporator |
| | 494 | Particular gas-liquid contact in sorber |
| | 495 | Sorbent vapor separator between generator and condenser |
| | 497 | With means to enhance separations in generator |
| | 498 | Compressor-condenser-evaporator circuit |
| | 499 | Unitarily movable connected units |
| | 500 | Jet powered by circuit fluid |
| | 501 | External fluid actuates compressor and exchanges heat |
| | 502 | Diverse fluids |
| | 503 | With liquid trap or disperser in suction line |
| | 504 | Means to apportion refrigerant to evaporator |
| | 505 | Cooling motor and/or compressor by refrigerant |
| | 506 | External cooling fluid contacts heat rejector |
| | 509 | Condensed liquid receiver, e.g., surge tank |
| | 510 | Plural compressors or multiple effect compression |
| | 511 | Fixed restrictor |
| | 512 | Distinct vapor liquid separator and separated liquid recycle |
| | 513 | Heat exchange between diverse function elements |
| | 515 | Evaporator, e.g., heat exchanger |
| | 529 | REFRIGERANT OR COOLANT, STORER OR HANDLER |
| | 531 | MISCELLANEOUS |
| CROSS-REFERENCE ART COLLECTIONS | ||
| | 900 | TRIPLE COLUMN |
| | 901 | SINGLE COLUMN |
| | 902 | APPARATUS |
| | 903 | Heat exchange structure |
| | 905 | Column |
| | 908 | Filter or absorber |
| | 909 | Regeneration |
| | 910 | Expander |
| | 911 | Portable |
| | 912 | EXTERNAL REFRIGERATION SYSTEM |
| | 914 | MAGNETIC OR ELECTRIC FIELD |
| | 915 | COMBUSTION |
| | 916 | EXPLOSION REDUCTION |
| | 917 | MERCURY |
| | 918 | HALOCARBON |
| | 919 | ISOTOPE |
| | 920 | CARBON MONOXIDE |
| | 921 | CHLORINE |
| | 922 | SULFUR |
| | 923 | INERT GAS |
| | 926 | GASOLINE |
| | 927 | NATURAL GAS FROM NITROGEN |
| | 928 | RECOVERY OF CARBON DIOXIDE |
| | 931 | RECOVERY OF HYDROGEN |
| | 935 | OLEFIN |
| | 936 | ERICKSON |
| | 937 | CHENG |
| | 938 | MEHRA |
| | 939 | PARTIAL FEED STREAM EXPANSION (AIR) |
| FOREIGN ART COLLECTIONS | ||
| FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
| DIGESTS | ||
| | DIG1 | RADIANT COOLING |
| | DIG2 | REFRIGERANT PUMPS |
| | DIG5 | AIRCRAFT COOLING |
| | DIG7 | VACUUM PLATES |
| | DIG10 | TOOL COOLING |
| | DIG11 | HYDRATOR RECEPTACLES |
| | DIG13 | INSULATION |
| | DIG16 | ROOF AND CEILING LOCATED COOLERS |
| | DIG17 | CONDENSER PRESSURE CONTROL |
| | DIG19 | IONIC THOMPSON EFFECT |
| | DIG20 | MATERIALS USED TO PREVENT CORROSION IN REFRIGERATION SYSTEM |
| | DIG21 | EVAPORATORS WHERE REFRIGERANT COVERS HEAT EXCHANGE COIL |
| | DIG22 | FREE COOLING |
| | DIG23 | EXPLOSIVE DIGEST |