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Browse by Category: Main > Construction |
| Class Number |
Class Name |
Patents |
| 175 |
Boring or penetrating the earth |
22,089 |
| 14 |
Bridges |
2,559 |
| D25 |
Building units and construction elements |
12,249 |
| 172 |
Earth working |
14,489 |
| 37 |
Excavating |
8,581 |
| 411 |
Expanded, threaded, driven, headed, tool-deformed, or locked-threaded fastener |
24,606 |
| 256 |
Fences |
5,291 |
| 182 |
Fire escape, ladder, or scaffold |
12,030 |
| 108 |
Horizontally supported planar surfaces |
12,699 |
| 403 |
Joints and connections |
41,499 |
| 49 |
Movable or removable closures |
19,986 |
| 285 |
Pipe joints or couplings |
41,407 |
| 138 |
Pipes and tubular conduits |
23,748 |
| 404 |
Road structure, process, or apparatus |
11,104 |
| 277 |
Seal for a joint or juncture |
28,442 |
| 249 |
Static molds |
12,367 |
| 52 |
Static structures (e.g., buildings) |
99,767 |
| 125 |
Stone working |
2,967 |
| 248 |
Supports |
69,261 |
| 312 |
Supports: cabinet structure |
22,133 |
| 211 |
Supports: racks |
22,531 |
| 212 |
Traversing hoists |
5,395 |
| 171 |
Unearthing plants or buried objects |
816 |
| 454 |
Ventilation |
13,282 |
| 144 |
Woodworking |
15,626 | |
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