| All Patents in class 81/91.1 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 126,506 | May 07, 1872 | W.C. Westerfield | Improvement in Pipe-Wrenches | pipe wrenches |
| 159,234 | Jan. 26, 1875 | J.B. Westwick | Combined Pipe-Tongs and Wrench | pipe tongs |
| 320,872 | Jun. 23, 1885 | J.F. Guthrie, Jr. | Pipe Wrench | pipe wrenches |
| 354,718 | Dec. 21, 1886 | F.C. Sawhill, T.D. McCarty | Pipe Wrench | pipe wrenches |
| 416,792 | Dec. 10, 1889 | J.A. Maloney | Pipe Wrench | pipe wrenches |
| 441,020 | Nov. 18, 1890 | A.A. Peterkin | Pipe Wrench | chain and strap wrenches |
| 498,638 | May 30, 1893 | G. Englund | Tool For Turning Pipes, Car Axles, Etc. | pipe tongs |
| 590,562 | Sep. 28, 1897 | T.J. Baker | Pipe or Rod Wrench | pipe wrenches |
| 615,643 | Dec. 06, 1898 | J.F. Strahle | Wrench | alligator wrenches |
| 654,176 | Jul. 24, 1900 | O. McNelly, H. McNelly, J.F. Janney | Pipe Wrench | pipe wrenches |
| 729,728 | Jun. 02, 1903 | F.D. Bullard | Pipe Wrench | self-adjust wrenches |
| 742,389 | Oct. 27, 1903 | F.D. Bullard | Pipe-Wrench | self-adjust wrenches |
| 902,759 | Nov. 03, 1908 | G. Paterson | Wrench | pipe wrenches |
| 1,587,352 | Jun. 01, 1926 | J.A. Peterson | Quick-Acting Wrench | self-adjust wrenches |
| 2,210,274 | Aug. 06, 1940 | O. Becklin | Wrench | self-adjust wrenches |
