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Browse by Category: Main > Construction |
| Class Number |
Class Name |
Patents |
| 175 |
Boring or penetrating the earth |
26,295 |
| 14 |
Bridges |
2,955 |
| D25 |
Building units and construction elements |
14,006 |
| 172 |
Earth working |
15,581 |
| 37 |
Excavating |
9,713 |
| 411 |
Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener |
27,245 |
| 256 |
Fences |
5,839 |
| 182 |
Fire escape, ladder, or scaffold |
13,330 |
| 108 |
Horizontally supported planar surfaces |
14,356 |
| 403 |
Joints and connections |
44,559 |
| 49 |
Movable or removable closures |
22,705 |
| 285 |
Pipe joints or couplings |
45,211 |
| 138 |
Pipes and tubular conduits |
26,041 |
| 404 |
Road structure, process, or apparatus |
12,681 |
| 277 |
Seal for a joint or juncture |
31,101 |
| 249 |
Static molds |
13,391 |
| 52 |
Static structures (e.g., buildings) |
116,845 |
| 125 |
Stone working |
3,263 |
| 248 |
Supports |
82,329 |
| 312 |
Supports: cabinet structure |
25,737 |
| 211 |
Supports: racks |
25,056 |
| 212 |
Traversing hoists |
5,868 |
| 171 |
Unearthing plants or buried objects |
870 |
| 454 |
Ventilation |
15,128 |
| 144 |
Woodworking |
16,694 | |
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