| Class Number |
Class Name |
No. of Patents |
| D23/200 |
Fluid handling or treatment equipment |
116 |
| D23/213 |
Dispersal (i.e., sprayer, fogger, nozzle, aerator, etc.) (4) |
743 |
| D23/230 |
Ball and socket joint for adjustment |
18 |
| D23/228 |
Combined |
49 |
| D23/223 |
Hand held or controlled type |
562 |
| D23/224 |
Direct piston or plunger actuation (i.e., without trigger or lever) |
5 |
| D23/226 |
Trigger, lever or button actuation |
461 |
| D23/227 |
Cover or guard |
42 |
| D23/225 |
With material container (6) |
252 |
| D23/229 |
Provision for adjustment of spray pattern or flow |
275 |
| D23/222 |
Simulative |
14 |
| D23/214 |
Sprinkler for lawn, agricultural irrigation or fire extinguishing (5) |
240 |
| D23/221 |
Base |
57 |
| D23/216 |
Oscillating |
51 |
| D23/220 |
Plural rotating arms |
12 |
| D23/218 |
Recessed type |
20 |
| D23/215 |
Simulative |
59 |
| D23/219 |
Tracking type (i.e., sprinkler follows hose, etc.) |
8 |
| D23/217 |
With surface penetration means |
25 |
| D23/259 |
Fitting (10) |
127 |
| D23/260 |
Cap, plug, vent or screen (11) |
145 |
| D23/261 |
Drain guard or strainer (12) |
143 |
| D23/262 |
Coupling or joint |
305 |
| D23/265 |
Clamp or bolt engagement |
46 |
| D23/263 |
Elbow or with flow direction change |
110 |
| D23/264 |
Adjustable (e.g., swivel, etc.) |
16 |
| D23/269 |
Gasket or packing |
80 |
| D23/267 |
Gutter |
85 |
| D23/266 |
Pipe, tubing or hose |
141 |
| D23/268 |
Trap |
38 |
| D23/201 |
Fountain |
115 |
| D23/211.1 |
Gasoline or fuel type can |
23 |
| D23/211.2 |
With elongated neck |
13 |
| D23/231 |
Hand or foot operated pump or well curb |
55 |
| D23/232 |
Reciprocating lever actuated |
10 |
| D23/211 |
Lubricating can |
4 |
| D23/202 |
Storage tank |
147 |
| D23/205 |
Cylindrical |
58 |
| D23/206 |
Element or attachment (1) |
66 |
| D23/204 |
Substantially spherical |
9 |
| D23/203 |
Underground type (e.g., septic tank, etc.) |
16 |
| D23/207 |
Treatment |
356 |
| D23/209 |
Filter or strainer (2) |
627 |
| D23/210 |
Immersion type (e.g., aquarium filter, etc.) |
88 |
| D23/208 |
Sanitary fixture type (e.g., deodorant holder, chemical dispenser, etc.) |
161 |
| D23/233 |
Valve or body therefor |
476 |
| D23/236 |
Ballcock or float type |
47 |
| D23/237 |
Check |
19 |
| D23/249 |
Element or attachment |
342 |
| D23/258 |
Float or check |
9 |
| D23/250 |
Handle |
361 |
| D23/252 |
Offset from axis |
618 |
| D23/253 |
Rim connected to hub by spokes |
7 |
| D23/251 |
Simulative |
21 |
| D23/254 |
With escutcheon |
250 |
| D23/255 |
Spout (9) |
684 |
| D23/256 |
Simulative |
22 |
| D23/257 |
With control for diverter or drain |
145 |
| D23/238 |
Faucet fixture (7) |
1047 |
| D23/239 |
Combined (e.g., with dishwashing brush, support therefor, etc.) |
37 |
| D23/240 |
With soap dish or with provision therefor |
5 |
| D23/241 |
Plural flow controls or provision therefor |
493 |
| D23/242 |
Distinct (i.e., when mounted, controls and spout are separated) |
350 |
| D23/243 |
Pivoting spout |
85 |
| D23/244 |
Gate or butterfly type |
31 |
| D23/234 |
Hydrant |
18 |
| D23/245 |
Manual or visible mechanical control or with provision therefor (e.g., handle, lever, etc.) |
166 |
| D23/246 |
With gauge or dial (8) |
9 |
| D23/235 |
Pressure regulating or relieving |
120 |
| D23/248 |
Symmetrical on one axis |
36 |
| D23/247 |
Symmetrical on two or more axes |
13 |
| D23/212 |
Watering can (3) |
61 |
| D23/314 |
Heating or cooling |
109 |
| D23/351 |
Air conditioner (27) |
321 |
| D23/352 |
Circular housing |
12 |
| D23/354 |
Element, e.g., front panel, etc. |
119 |
| D23/353 |
Window mount type |
110 |
| D23/355 |
Air treatment |
146 |
| D23/364 |
Air cleaner |
412 |
| D23/365 |
Filter |
267 |
| D23/359 |
Dehumidifier |
44 |
| D23/366 |
Deodorizer or ozonizer (28) |
880 |
| D23/369 |
Activated by moveable cover or by piercing |
97 |
| D23/367 |
Simulative |
213 |
| D23/368 |
With distinct hanger or suction cup |
67 |
| D23/370 |
Fan or ventilator |
273 |
| D23/384 |
Bellows |
5 |
| D23/377 |
Blade unit rotates on vertical axis |
662 |
| D23/383 |
Blower |
73 |
| D23/371 |
Exhaust type |
89 |
| D23/372 |
Range or oven |
118 |
| D23/373 |
Roof or chimney |
50 |
| D23/374 |
Chimney |
23 |
| D23/376 |
Circular hood |
13 |
| D23/375 |
Wind rotated, e.g., turbine type, etc. |
7 |
| D23/378 |
Floor type on vertically elongated stand |
117 |
| D23/380 |
Plural impeller units, e.g., side by side, etc. |
33 |
| D23/381 |
Wire protective grille |
115 |
| D23/382 |
Circular grille |
220 |
| D23/379 |
With exposed blade |
387 |
| D23/356 |
Humidifier |
200 |
| D23/358 |
Element |
71 |
| D23/357 |
Wall or furnace mount |
13 |
| D23/360 |
Vaporizer |
95 |
| D23/362 |
Circular container |
12 |
| D23/363 |
Element |
10 |
| D23/361 |
Wall mount |
3 |
| D23/385 |
Wall or ceiling mount (24) |
288 |
| D23/328 |
Combined heating and cooling or with diverse element |
121 |
| D23/318 |
Domestic water heater or boiler |
50 |
| D23/319 |
Boiler |
12 |
| D23/322 |
Element |
16 |
| D23/323 |
Heat exchange unit, e.g., coil, etc. |
38 |
| D23/321 |
With discharge valve or tap |
5 |
| D23/320 |
With door or access panel |
6 |
| D23/386 |
Element or attachment, not elsewhere specified |
231 |
| D23/420 |
Ash pan or sifter |
13 |
| D23/415 |
Burner or heater coil |
20 |
| D23/417 |
Electric |
11 |
| D23/418 |
Element |
10 |
| D23/419 |
Radiant |
10 |
| D23/416 |
Oil type |
12 |
| D23/410 |
Coal scuttle or wood holder |
53 |
| D23/411 |
Fan element |
978 |
| D23/412 |
Fan guard |
61 |
| D23/413 |
Fan or ventilator blade |
284 |
| D23/414 |
With circumferential band |
3 |
| D23/422 |
Fire brick |
8 |
| D23/403 |
Fireplace element not elsewhere specified |
86 |
| D23/407 |
Andiron or fire dog |
4 |
| D23/408 |
Simulative |
0 |
| D23/409 |
Artificial log burner element |
12 |
| D23/405 |
Lining or enclosure for opening (31) |
18 |
| D23/406 |
Screen |
38 |
| D23/404 |
Mantle or frame for opening |
47 |
| D23/387 |
Flow director (29) |
52 |
| D23/388 |
Register or diffuser |
87 |
| D23/392 |
Adjustable louver or damper |
18 |
| D23/391 |
Arched or curved top |
4 |
| D23/389 |
Baseboard type |
23 |
| D23/390 |
Circular |
21 |
| D23/393 |
Vent, ductwork, or element thereof |
266 |
| D23/394 |
Stovepipe |
0 |
| D23/397 |
Grate |
5 |
| D23/398 |
Fireplace type (30) |
43 |
| D23/401 |
Enclosed four sides |
4 |
| D23/399 |
Hollow tube circulator with blower unit |
22 |
| D23/400 |
Perforated or expanded metal |
5 |
| D23/402 |
Stove or furnace type |
5 |
| D23/395 |
Radiator cover or cabinet |
20 |
| D23/396 |
Stoker |
6 |
| D23/421 |
Valve or control |
3 |
| D23/329 |
Furnace |
27 |
| D23/316 |
Liquid immersion type, e.g., aquarium, swimming pool, etc. (24) |
19 |
| D23/317 |
Mobile space heater, e.g., wheeled blower type, etc. |
42 |
| D23/332 |
Portable |
241 |
| D23/333 |
Air conditioner |
55 |
| D23/334 |
Animal or agricultural heater |
1 |
| D23/341 |
Element |
21 |
| D23/335 |
Heating element protected by grille, grid, etc. |
268 |
| D23/336 |
Circular or cylindrical housing |
84 |
| D23/339 |
Gas fired type |
31 |
| D23/338 |
Liquid fuel type, e.g., kerosene, etc. |
64 |
| D23/337 |
Pedestal or pivoting head mount |
57 |
| D23/340 |
Quartz type |
11 |
| D23/330 |
Radiator, e.g., spaced enclosed heat exchangers |
33 |
| D23/331 |
Plant life or scroll type ornamentation |
0 |
| D23/315 |
Sauna or steam bath type |
7 |
| D23/342 |
Stabile space heater |
108 |
| D23/343 |
Fireplace or solid fuel heating stove (25) |
156 |
| D23/348 |
Circular horizontal cross section |
37 |
| D23/344 |
Fireplace insert |
70 |
| D23/345 |
Masonry or tile-like surround, e.g., architectural type fireplace |
15 |
| D23/346 |
Ornate cast iron type (26) |
25 |
| D23/347 |
Element therefor, e.g., stove plate, etc. |
12 |
| D23/349 |
Simulative |
30 |
| D23/350 |
Symmetrical front |
105 |
| D23/324 |
Vehicle heating or cooling |
27 |
| D23/325 |
Air conditioning |
56 |
| D23/326 |
Defroster |
3 |
| D23/327 |
With adjustable louver or door |
7 |
| D23/499 |
Miscellaneous |
16 |
| D23/270 |
Sanitary fixture or housing therefor |
12 |
| D23/277 |
Bathtub (15) |
242 |
| D23/278 |
Infant type |
54 |
| D23/280.1 |
Symmetrical (16) |
185 |
| D23/280.4 |
Footed |
23 |
| D23/280.3 |
Having antislip surface |
22 |
| D23/280.2 |
Having support handle |
36 |
| D23/279 |
With door or provision for external storage |
11 |
| D23/271 |
Combined (13) |
40 |
| D23/275 |
Bathtub and shower enclosure |
54 |
| D23/272 |
Sink and stove or refrigerator |
9 |
| D23/274 |
Sink and water closet or urinal |
25 |
| D23/273 |
Sink, water closet and bathing unit |
1 |
| D23/303 |
Element or attachment (20) |
68 |
| D23/304 |
Bathtub or shower |
344 |
| D23/307 |
Splash shield |
32 |
| D23/305 |
Surround, door or panel |
54 |
| D23/306 |
Front |
15 |
| D23/308 |
Sink (21) |
94 |
| D23/309 |
Water closet or urinal |
119 |
| D23/310 |
Deflector (22) |
22 |
| D23/311 |
Seat, or bowl cover (23) |
297 |
| D23/312 |
Simulative |
20 |
| D23/313 |
Tank or tank cover |
73 |
| D23/283 |
Shower or shower receptor (17) |
151 |
| D23/284 |
Sink |
191 |
| D23/288 |
Corner type |
10 |
| D23/290 |
Plural |
179 |
| D23/289 |
Shampoo type (e.g., with depression on rim for neck, etc.) |
30 |
| D23/285 |
Simulative, or with radiating striations |
45 |
| D23/293.1 |
Symmetrical (16) |
325 |
| D23/292 |
Unitary singular support column |
117 |
| D23/286 |
With cabinet or with provision for storage |
119 |
| D23/287 |
With drainboard (i.e., adjacent recessed inclined surface) |
56 |
| D23/291 |
With integral spout or hooded overflow |
12 |
| D23/276 |
Sitz bath (14) |
2 |
| D23/302 |
Urinal (19) |
63 |
| D23/295 |
Water closet, bidet or bowl therefor |
180 |
| D23/296 |
Infant training type |
55 |
| D23/297 |
Simulative |
23 |
| D23/299 |
Self-contained (i.e., chemical or portable type) |
63 |
| D23/298 |
Simulative |
7 |
| D23/300 |
Wall mounted |
15 |
| D23/301 |
With water tank (18) |
169 |
