| All Patents in class 81/176 |
Patents 1 -
15
of 46
      |
| Number | Title | Classification(s) |
| 1,720 | Screw-Wrench | 81/176 |
| 14,779 | Wrench | 81/176 |
| 31,693 | Improvements in Wagon-Wrenches | 81/176, 81/177.1 |
| 56,460 | Improvement in Screw-Wrenches | 81/176 |
| 69,911 | Improvement in Wrenches | 81/165, 81/176, 81/177.8 |
| 117,679 | Improvement in Wrenches | 81/176, 81/177.1, 81/185.1, 81/DIG.3 |
| 141,289 | Improvement in Screw-Wrenches | 81/176, 81/177.1 |
| 157,968 | Wrenches | 81/128, 81/176, 81/DIG.3 |
| 179,546 | Improvements in Pipe Cutters and Wrenches | 30/94, 81/176, 81/181 |
| 202,582 | Wrench | 408/240, 81/176 |
| 222,484 | Improvement in Pipe-Wrenches | 81/176, 81/356, 81/359, 81/396 |
| 251,635 | Improved Monkey Wrench | 81/136, 81/176 |
| 447,163 | Screw Wrench | 81/176 |
| 513,233 | Nut Wrench | 81/176 |
| 532,634 | Wrench | 76/114, 81/176 |
