| All Patents in class 81/109 |
Patents 1 -
15
of 15
      |
| Number | Title | Classification(s) |
| 194,254 | Pipe-Tongs | 81/109 |
| 377,668 | Pipe Wrench | 81/109, 81/129 |
| 464,238 | Pipe Wrench | 81/109, 81/134 |
| 466,195 | Pipe Tongs | 81/109, 81/134 |
| 497,797 | Pipe Tongs | 81/109, 81/180.1, 81/98 |
| 516,485 | Pipe Wrench | 81/109, 81/170 |
| 521,312 | Wrench For Pipes, Rods, etc. | 81/109, 81/175 |
| 523,810 | Pipe Wrench | 81/109, 81/170 |
| 533,295 | Pipe Wrench | 81/109, 81/180.1 |
| 538,601 | Adjustable Pipe Tongs | 81/109, 81/140 |
| 586,738 | Screw Wrench | 81/109 |
| 760,613 | Combination-tool | 30/145, 30/408, 7/126, 7/131, 81/109, 81/3.09, 81/3.44, D8/39 |
| 767,532 | Pipe Wrench | 81/106, 81/109, 81/140 |
| 1,449,386 | Pipe Wrench | 81/109, 81/172 |
| 1,566,764 | Wrench | 81/109, 81/110 |
