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Classification Resources
 
Class   D23ENVIRONMENTAL HEATING AND COOLING; FLUID HANDLING AND SANITARY EQUIPMENT
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[List of Pre Grant Publications for class D23 subclass 200][List of Patents for class D23 subclass 200]200 FLUID HANDLING OR TREATMENT EQUIPMENT
 [List of Pre Grant Publications for class D23 subclass 201][List of Patents for class D23 subclass 201]201 Subclass 201 indent level is 1 Fountain
[List of Pre Grant Publications for class D23 subclass 202][List of Patents for class D23 subclass 202]202 Subclass 202 indent level is 1 Storage tank
[List of Pre Grant Publications for class D23 subclass 207][List of Patents for class D23 subclass 207]207 Subclass 207 indent level is 1 Treatment
 [List of Pre Grant Publications for class D23 subclass 211][List of Patents for class D23 subclass 211]211 Subclass 211 indent level is 1 Lubricating can
[List of Pre Grant Publications for class D23 subclass 211.1][List of Patents for class D23 subclass 211.1]211.1 Subclass 211.1 indent level is 1 Gasoline or fuel type can
 [List of Pre Grant Publications for class D23 subclass 212][List of Patents for class D23 subclass 212]212 Subclass 212 indent level is 1 Watering can (3)
[List of Pre Grant Publications for class D23 subclass 213][List of Patents for class D23 subclass 213]213 Subclass 213 indent level is 1 Dispersal (i.e., sprayer, fogger, nozzle, aerator, etc.) (4)
[List of Pre Grant Publications for class D23 subclass 231][List of Patents for class D23 subclass 231]231 Subclass 231 indent level is 1 Hand or foot operated pump or well curb
[List of Pre Grant Publications for class D23 subclass 233][List of Patents for class D23 subclass 233]233 Subclass 233 indent level is 1 Valve or body therefor
[List of Pre Grant Publications for class D23 subclass 259][List of Patents for class D23 subclass 259]259 Subclass 259 indent level is 1 Fitting (10)
[List of Pre Grant Publications for class D23 subclass 270][List of Patents for class D23 subclass 270]270 SANITARY FIXTURE OR HOUSING THEREFOR
[List of Pre Grant Publications for class D23 subclass 314][List of Patents for class D23 subclass 314]314 HEATING OR COOLING
 [List of Pre Grant Publications for class D23 subclass 315][List of Patents for class D23 subclass 315]315 Subclass 315 indent level is 1 Sauna or steam bath type
 [List of Pre Grant Publications for class D23 subclass 316][List of Patents for class D23 subclass 316]316 Subclass 316 indent level is 1 Liquid immersion type, e.g., aquarium, swimming pool, etc. (24)
 [List of Pre Grant Publications for class D23 subclass 317][List of Patents for class D23 subclass 317]317 Subclass 317 indent level is 1 Mobile space heater, e.g., wheeled blower type, etc.
[List of Pre Grant Publications for class D23 subclass 318][List of Patents for class D23 subclass 318]318 Subclass 318 indent level is 1 Domestic water heater or boiler
[List of Pre Grant Publications for class D23 subclass 324][List of Patents for class D23 subclass 324]324 Subclass 324 indent level is 1 Vehicle heating or cooling
 [List of Pre Grant Publications for class D23 subclass 328][List of Patents for class D23 subclass 328]328 Subclass 328 indent level is 1 Combined heating and cooling or with diverse element
 [List of Pre Grant Publications for class D23 subclass 329][List of Patents for class D23 subclass 329]329 Subclass 329 indent level is 1 Furnace
[List of Pre Grant Publications for class D23 subclass 330][List of Patents for class D23 subclass 330]330 Subclass 330 indent level is 1 Radiator, e.g., spaced enclosed heat exchangers
[List of Pre Grant Publications for class D23 subclass 332][List of Patents for class D23 subclass 332]332 Subclass 332 indent level is 1 Portable
[List of Pre Grant Publications for class D23 subclass 342][List of Patents for class D23 subclass 342]342 Subclass 342 indent level is 1 Stabile space heater
[List of Pre Grant Publications for class D23 subclass 351][List of Patents for class D23 subclass 351]351 Subclass 351 indent level is 1 Air conditioner (27)
[List of Pre Grant Publications for class D23 subclass 355][List of Patents for class D23 subclass 355]355 Subclass 355 indent level is 1 Air treatment
[List of Pre Grant Publications for class D23 subclass 386][List of Patents for class D23 subclass 386]386 Subclass 386 indent level is 1 Element or attachment, not elsewhere specified
 [List of Pre Grant Publications for class D23 subclass 499][List of Patents for class D23 subclass 499]499 MISCELLANEOUS
SEARCH NOTES FOR CLASS D23
(1) For cap or plug, see subclass 260. For underwater breathing apparatus, valves, or regulators, see D24-110.5+.
(2) For filter disclosed as part of a faucet, see subclasses 238+ For aerator, see subclass 213.
(3) For battery water dispenser, see subclass 200.
(4) For aerator disclosed as part of a faucet, see subclasses 238+. For shower head disclosed with shower unit structure, see subclass 283.
(5) For hose nozzle or hand held sprayer, see subclasses 223+. For time or control, see subclass 245.
(6) Container must be shown in full or in broken lines.
(7) If disclosed with sink, classified in subclasses 284+.
(8) For gauge or dial, per se, see Class D10.
(9) Includes spout with provision for diverter control. If provision is made for flow control handle, patent is classified as faucet in subclasses 238+.
(10) Includes overflow fitting.
(11) Includes sink stopper.
(12) Includes urinal screen.
(13) For faucet combined with sink and/or cabinet, see subclasses 284+.
(14) For bidet, see subclass 295.
(15) For front panel or sub-assembly, see subclasses 304+.
(16) Exclusive of drain or overflow opening.
(17) For bathtub surround, see subclass 305. For shower head, per se, or with associated plumbing only (such as valve), see subclass 213.
(18) For tank, per se, see subclass 313.
(19) For water closet attachment type, see subclass 310.
(20) Includes leg or support For overflow fitting, see subclass 261 For drain stopper or screen see, respectively, subclasses 260 and 261.
(21) For drain stopper or screen see, respectively, subclasses 260 and 261.
(22) For drain screen, see subclass 261.
(23) For infant training seat, see subclass 296. For seat lifter handle, see D8-307.
(24) Includes element.
(25) Stoves with upper and lower doors, e.g., for fuel supply and ash removal are included in this subclass.
(26) Highly surface ornamented parlor or Franklin-type stoves of the late 19th and early 20th century variety. Ornamentation usually formed as part of the casting.
(27) Includes cooling tower.
(28) Includes all air freshener articles.
(29) See air conditioner element, subclass 354 for additional flow director panels.
(30) Search subclass 405 for grate combined with interior lining.
(31) Decorative panel for season use.