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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 203][List of Patents for class D23 subclass 203]203 Subclass 203 indent level is 2 Underground type (e.g., septic tank, etc.)
 [List of Pre Grant Publications for class D23 subclass 204][List of Patents for class D23 subclass 204]204 Subclass 204 indent level is 2 Substantially spherical
 [List of Pre Grant Publications for class D23 subclass 205][List of Patents for class D23 subclass 205]205 Subclass 205 indent level is 2 Cylindrical
 [List of Pre Grant Publications for class D23 subclass 206][List of Patents for class D23 subclass 206]206 Subclass 206 indent level is 2 Element or attachment (1)
[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 208][List of Patents for class D23 subclass 208]208 Subclass 208 indent level is 2 Sanitary fixture type (e.g., deodorant holder, chemical dispenser, etc.)
[List of Pre Grant Publications for class D23 subclass 209][List of Patents for class D23 subclass 209]209 Subclass 209 indent level is 2 Filter or strainer (2)
 [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 211.2][List of Patents for class D23 subclass 211.2]211.2 Subclass 211.2 indent level is 2 With elongated neck
 [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 214][List of Patents for class D23 subclass 214]214 Subclass 214 indent level is 2 Sprinkler for lawn, agricultural irrigation or fire extinguishing (5)
 [List of Pre Grant Publications for class D23 subclass 222][List of Patents for class D23 subclass 222]222 Subclass 222 indent level is 2 Simulative
[List of Pre Grant Publications for class D23 subclass 223][List of Patents for class D23 subclass 223]223 Subclass 223 indent level is 2 Hand held or controlled type
 [List of Pre Grant Publications for class D23 subclass 228][List of Patents for class D23 subclass 228]228 Subclass 228 indent level is 2 Combined
 [List of Pre Grant Publications for class D23 subclass 229][List of Patents for class D23 subclass 229]229 Subclass 229 indent level is 2 Provision for adjustment of spray pattern or flow
 [List of Pre Grant Publications for class D23 subclass 230][List of Patents for class D23 subclass 230]230 Subclass 230 indent level is 2 Ball and socket joint for adjustment
[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 232][List of Patents for class D23 subclass 232]232 Subclass 232 indent level is 2 Reciprocating lever actuated
[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 234][List of Patents for class D23 subclass 234]234 Subclass 234 indent level is 2 Hydrant
 [List of Pre Grant Publications for class D23 subclass 235][List of Patents for class D23 subclass 235]235 Subclass 235 indent level is 2 Pressure regulating or relieving
 [List of Pre Grant Publications for class D23 subclass 236][List of Patents for class D23 subclass 236]236 Subclass 236 indent level is 2 Ballcock or float type
 [List of Pre Grant Publications for class D23 subclass 237][List of Patents for class D23 subclass 237]237 Subclass 237 indent level is 2 Check
[List of Pre Grant Publications for class D23 subclass 238][List of Patents for class D23 subclass 238]238 Subclass 238 indent level is 2 Faucet fixture (7)
 [List of Pre Grant Publications for class D23 subclass 244][List of Patents for class D23 subclass 244]244 Subclass 244 indent level is 2 Gate or butterfly type
[List of Pre Grant Publications for class D23 subclass 245][List of Patents for class D23 subclass 245]245 Subclass 245 indent level is 2 Manual or visible mechanical control or with provision therefor (e.g., handle, lever, etc.)
 [List of Pre Grant Publications for class D23 subclass 247][List of Patents for class D23 subclass 247]247 Subclass 247 indent level is 2 Symmetrical on two or more axes
 [List of Pre Grant Publications for class D23 subclass 248][List of Patents for class D23 subclass 248]248 Subclass 248 indent level is 2 Symmetrical on one axis
[List of Pre Grant Publications for class D23 subclass 249][List of Patents for class D23 subclass 249]249 Subclass 249 indent level is 2 Element or attachment
[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 260][List of Patents for class D23 subclass 260]260 Subclass 260 indent level is 2 Cap, plug, vent or screen (11)
[List of Pre Grant Publications for class D23 subclass 262][List of Patents for class D23 subclass 262]262 Subclass 262 indent level is 2 Coupling or joint
 [List of Pre Grant Publications for class D23 subclass 266][List of Patents for class D23 subclass 266]266 Subclass 266 indent level is 2 Pipe, tubing or hose
 [List of Pre Grant Publications for class D23 subclass 267][List of Patents for class D23 subclass 267]267 Subclass 267 indent level is 2 Gutter
 [List of Pre Grant Publications for class D23 subclass 268][List of Patents for class D23 subclass 268]268 Subclass 268 indent level is 2 Trap
 [List of Pre Grant Publications for class D23 subclass 269][List of Patents for class D23 subclass 269]269 Subclass 269 indent level is 2 Gasket or packing
[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 271][List of Patents for class D23 subclass 271]271 Subclass 271 indent level is 1 Combined (13)
 [List of Pre Grant Publications for class D23 subclass 272][List of Patents for class D23 subclass 272]272 Subclass 272 indent level is 2 Sink and stove or refrigerator
 [List of Pre Grant Publications for class D23 subclass 273][List of Patents for class D23 subclass 273]273 Subclass 273 indent level is 2 Sink, water closet and bathing unit
 [List of Pre Grant Publications for class D23 subclass 274][List of Patents for class D23 subclass 274]274 Subclass 274 indent level is 2 Sink and water closet or urinal
 [List of Pre Grant Publications for class D23 subclass 275][List of Patents for class D23 subclass 275]275 Subclass 275 indent level is 2 Bathtub and shower enclosure
 [List of Pre Grant Publications for class D23 subclass 276][List of Patents for class D23 subclass 276]276 Subclass 276 indent level is 1 Sitz bath (14)
[List of Pre Grant Publications for class D23 subclass 277][List of Patents for class D23 subclass 277]277 Subclass 277 indent level is 1 Bathtub (15)
 [List of Pre Grant Publications for class D23 subclass 278][List of Patents for class D23 subclass 278]278 Subclass 278 indent level is 2 Infant type
 [List of Pre Grant Publications for class D23 subclass 279][List of Patents for class D23 subclass 279]279 Subclass 279 indent level is 2 With door or provision for external storage
[List of Pre Grant Publications for class D23 subclass 280.1][List of Patents for class D23 subclass 280.1]280.1 Subclass 280.1 indent level is 2 Symmetrical (16)
 [List of Pre Grant Publications for class D23 subclass 283][List of Patents for class D23 subclass 283]283 Subclass 283 indent level is 1 Shower or shower receptor (17)
[List of Pre Grant Publications for class D23 subclass 284][List of Patents for class D23 subclass 284]284 Subclass 284 indent level is 1 Sink
 [List of Pre Grant Publications for class D23 subclass 285][List of Patents for class D23 subclass 285]285 Subclass 285 indent level is 2 Simulative, or with radiating striations
 [List of Pre Grant Publications for class D23 subclass 286][List of Patents for class D23 subclass 286]286 Subclass 286 indent level is 2 With cabinet or with provision for storage
 [List of Pre Grant Publications for class D23 subclass 287][List of Patents for class D23 subclass 287]287 Subclass 287 indent level is 2 With drainboard (i.e., adjacent recessed inclined surface)
 [List of Pre Grant Publications for class D23 subclass 288][List of Patents for class D23 subclass 288]288 Subclass 288 indent level is 2 Corner type
 [List of Pre Grant Publications for class D23 subclass 289][List of Patents for class D23 subclass 289]289 Subclass 289 indent level is 2 Shampoo type (e.g., with depression on rim for neck, etc.)
 [List of Pre Grant Publications for class D23 subclass 290][List of Patents for class D23 subclass 290]290 Subclass 290 indent level is 2 Plural
 [List of Pre Grant Publications for class D23 subclass 291][List of Patents for class D23 subclass 291]291 Subclass 291 indent level is 2 With integral spout or hooded overflow
 [List of Pre Grant Publications for class D23 subclass 292][List of Patents for class D23 subclass 292]292 Subclass 292 indent level is 2 Unitary singular support column
 [List of Pre Grant Publications for class D23 subclass 293.1][List of Patents for class D23 subclass 293.1]293.1 Subclass 293.1 indent level is 2 Symmetrical (16)
[List of Pre Grant Publications for class D23 subclass 295][List of Patents for class D23 subclass 295]295 Subclass 295 indent level is 1 Water closet, bidet or bowl therefor
[List of Pre Grant Publications for class D23 subclass 296][List of Patents for class D23 subclass 296]296 Subclass 296 indent level is 2 Infant training type
 [List of Pre Grant Publications for class D23 subclass 298][List of Patents for class D23 subclass 298]298 Subclass 298 indent level is 2 Simulative
 [List of Pre Grant Publications for class D23 subclass 299][List of Patents for class D23 subclass 299]299 Subclass 299 indent level is 2 Self-contained (i.e., chemical or portable type)
 [List of Pre Grant Publications for class D23 subclass 300][List of Patents for class D23 subclass 300]300 Subclass 300 indent level is 2 Wall mounted
 [List of Pre Grant Publications for class D23 subclass 301][List of Patents for class D23 subclass 301]301 Subclass 301 indent level is 2 With water tank (18)
 [List of Pre Grant Publications for class D23 subclass 302][List of Patents for class D23 subclass 302]302 Subclass 302 indent level is 1 Urinal (19)
[List of Pre Grant Publications for class D23 subclass 303][List of Patents for class D23 subclass 303]303 Subclass 303 indent level is 1 Element or attachment (20)
[List of Pre Grant Publications for class D23 subclass 304][List of Patents for class D23 subclass 304]304 Subclass 304 indent level is 2 Bathtub or shower
 [List of Pre Grant Publications for class D23 subclass 308][List of Patents for class D23 subclass 308]308 Subclass 308 indent level is 2 Sink (21)
[List of Pre Grant Publications for class D23 subclass 309][List of Patents for class D23 subclass 309]309 Subclass 309 indent level is 2 Water closet or urinal
[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 319][List of Patents for class D23 subclass 319]319 Subclass 319 indent level is 2 Boiler
 [List of Pre Grant Publications for class D23 subclass 320][List of Patents for class D23 subclass 320]320 Subclass 320 indent level is 2 With door or access panel
 [List of Pre Grant Publications for class D23 subclass 321][List of Patents for class D23 subclass 321]321 Subclass 321 indent level is 2 With discharge valve or tap
[List of Pre Grant Publications for class D23 subclass 322][List of Patents for class D23 subclass 322]322 Subclass 322 indent level is 2 Element
[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 325][List of Patents for class D23 subclass 325]325 Subclass 325 indent level is 2 Air conditioning
 [List of Pre Grant Publications for class D23 subclass 326][List of Patents for class D23 subclass 326]326 Subclass 326 indent level is 2 Defroster
 [List of Pre Grant Publications for class D23 subclass 327][List of Patents for class D23 subclass 327]327 Subclass 327 indent level is 2 With adjustable louver or door
 [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 331][List of Patents for class D23 subclass 331]331 Subclass 331 indent level is 2 Plant life or scroll type ornamentation
[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 333][List of Patents for class D23 subclass 333]333 Subclass 333 indent level is 2 Air conditioner
 [List of Pre Grant Publications for class D23 subclass 334][List of Patents for class D23 subclass 334]334 Subclass 334 indent level is 2 Animal or agricultural heater
[List of Pre Grant Publications for class D23 subclass 335][List of Patents for class D23 subclass 335]335 Subclass 335 indent level is 2 Heating element protected by grille, grid, etc.
 [List of Pre Grant Publications for class D23 subclass 341][List of Patents for class D23 subclass 341]341 Subclass 341 indent level is 2 Element
[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 343][List of Patents for class D23 subclass 343]343 Subclass 343 indent level is 2 Fireplace or solid fuel heating stove (25)
[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 352][List of Patents for class D23 subclass 352]352 Subclass 352 indent level is 2 Circular housing
 [List of Pre Grant Publications for class D23 subclass 353][List of Patents for class D23 subclass 353]353 Subclass 353 indent level is 2 Window mount type
 [List of Pre Grant Publications for class D23 subclass 354][List of Patents for class D23 subclass 354]354 Subclass 354 indent level is 2 Element, e.g., front panel, etc.
[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 356][List of Patents for class D23 subclass 356]356 Subclass 356 indent level is 2 Humidifier
 [List of Pre Grant Publications for class D23 subclass 359][List of Patents for class D23 subclass 359]359 Subclass 359 indent level is 2 Dehumidifier
[List of Pre Grant Publications for class D23 subclass 360][List of Patents for class D23 subclass 360]360 Subclass 360 indent level is 2 Vaporizer
[List of Pre Grant Publications for class D23 subclass 364][List of Patents for class D23 subclass 364]364 Subclass 364 indent level is 2 Air cleaner
[List of Pre Grant Publications for class D23 subclass 366][List of Patents for class D23 subclass 366]366 Subclass 366 indent level is 2 Deodorizer or ozonizer (28)
[List of Pre Grant Publications for class D23 subclass 370][List of Patents for class D23 subclass 370]370 Subclass 370 indent level is 2 Fan or ventilator
 [List of Pre Grant Publications for class D23 subclass 385][List of Patents for class D23 subclass 385]385 Subclass 385 indent level is 2 Wall or ceiling mount (24)
[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 387][List of Patents for class D23 subclass 387]387 Subclass 387 indent level is 2 Flow director (29)
 [List of Pre Grant Publications for class D23 subclass 395][List of Patents for class D23 subclass 395]395 Subclass 395 indent level is 2 Radiator cover or cabinet
 [List of Pre Grant Publications for class D23 subclass 396][List of Patents for class D23 subclass 396]396 Subclass 396 indent level is 2 Stoker
[List of Pre Grant Publications for class D23 subclass 397][List of Patents for class D23 subclass 397]397 Subclass 397 indent level is 2 Grate
[List of Pre Grant Publications for class D23 subclass 403][List of Patents for class D23 subclass 403]403 Subclass 403 indent level is 2 Fireplace element not elsewhere specified
 [List of Pre Grant Publications for class D23 subclass 410][List of Patents for class D23 subclass 410]410 Subclass 410 indent level is 2 Coal scuttle or wood holder
[List of Pre Grant Publications for class D23 subclass 411][List of Patents for class D23 subclass 411]411 Subclass 411 indent level is 2 Fan element
[List of Pre Grant Publications for class D23 subclass 415][List of Patents for class D23 subclass 415]415 Subclass 415 indent level is 2 Burner or heater coil
 [List of Pre Grant Publications for class D23 subclass 420][List of Patents for class D23 subclass 420]420 Subclass 420 indent level is 2 Ash pan or sifter
 [List of Pre Grant Publications for class D23 subclass 421][List of Patents for class D23 subclass 421]421 Subclass 421 indent level is 2 Valve or control
 [List of Pre Grant Publications for class D23 subclass 422][List of Patents for class D23 subclass 422]422 Subclass 422 indent level is 2 Fire brick
 [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.

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