| All Patents in class 81/98 |
Patents 1 -
15
of 97
      |
| Number | Date | Patentee | Title | Type |
| 6,077 | Jan. 30, 1849 | A. Hay | Improved Hinged Claw-Wrench | self-adjust wrenches |
| 26,530 | Dec. 20, 1859 | G. Smith | Improvement in Grippers for Grasping and Turning Cylindrical Articles | pipe wrenches |
| 31,034 | Jan. 01, 1861 | E. Ripley | Improvements in Wrenches for Turning Pipes, Round Bolts, and Similar Articles | pipe wrenches |
| 54,278 | May 01, 1866 | D. Bannister | Improvement in Gas Pipe Tongs | pipe tongs |
| 65,588 | Jun. 11, 1867 | A.M. Olds | Improved Self-Adjusting Wrench | pipe wrenches |
| 74,697 | Feb. 18, 1868 | W. Kenyon, Jr. | Improvement in Pipe-Tongs | pipe tongs |
| 115,678 | Jun. 06, 1871 | W.H. Barwick | Improvement in Pipe-Wrenches | pipe tongs |
| 132,579 | Oct. 29, 1872 | G.A. Holden | Improvment in Tubing-Tongs | pipe tongs |
| 135,773 | Feb. 11, 1873 | W.H. Burton | Improvement in Pipe-Wrenches | alligator wrenches |
| 143,908 | Oct. 21, 1873 | D.D. Ingram | Improved Pipe-Wrench | pipe wrenches |
| 148,089 | Mar. 03, 1874 | J.L. Ripley | Pipe-Wrenches | pipe wrenches |
| 149,641 | Apr. 14, 1874 | A. Collis | Pipe-Wrenches | pipe wrenches |
| 163,486 | May 18, 1875 | F.D. Hardy | Improvement in Car Starters | |
| 181,701 | Aug. 29, 1876 | D. McLaren | Pipe-Tongs | pipe wrenches |
| 185,958 | Jan. 02, 1877 | A. Dunnebake, C. Peterson | Improvement in Gas-Fitting Wrenches | pipe wrenches |
