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Browse by Category: Main > Construction |
| Class Number |
Class Name |
Patents |
| 175 |
Boring or penetrating the earth |
22,111 |
| 14 |
Bridges |
2,560 |
| D25 |
Building units and construction elements |
12,270 |
| 172 |
Earth working |
14,493 |
| 37 |
Excavating |
8,594 |
| 411 |
Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener |
24,622 |
| 256 |
Fences |
5,294 |
| 182 |
Fire escape, ladder, or scaffold |
12,036 |
| 108 |
Horizontally supported planar surfaces |
12,711 |
| 403 |
Joints and connections |
41,532 |
| 49 |
Movable or removable closures |
20,011 |
| 285 |
Pipe joints or couplings |
41,448 |
| 138 |
Pipes and tubular conduits |
23,767 |
| 404 |
Road structure, process, or apparatus |
11,114 |
| 277 |
Seal for a joint or juncture |
28,453 |
| 249 |
Static molds |
12,373 |
| 52 |
Static structures (e.g., buildings) |
99,931 |
| 125 |
Stone working |
2,969 |
| 248 |
Supports |
69,394 |
| 312 |
Supports: cabinet structure |
22,142 |
| 211 |
Supports: racks |
22,544 |
| 212 |
Traversing hoists |
5,398 |
| 171 |
Unearthing plants or buried objects |
818 |
| 454 |
Ventilation |
13,291 |
| 144 |
Woodworking |
15,639 | |
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