| All Patents in class 81/131 |
Patents 16 -
26
of 26
      |
| Number | Date | Patentee | Title | Type |
| 583,870 | Jun. 01, 1897 | E.C. Roberts | Wrench | quick adjust wrenches |
| 585,412 | Jun. 29, 1897 | T.G. Thomas | Wrench | quick adjust wrenches |
| 588,991 | Aug. 31, 1897 | D.A. Henderson | Pipe Wrench | pipe tongs |
| 601,506 | Mar. 29, 1898 | C.D. Eames | Tongs | pipe wrenches |
| 637,251 | Nov. 21, 1899 | A.L. Hamilton | Wrench | pliers type wrenches |
| 638,474 | Dec. 05, 1899 | E.C. Rollins | Wrench | pliers type wrenches |
| 717,479 | Dec. 30, 1902 | H.A. Westmoreland | Adjustable Wrench or Clamp | wedge adjust wrenches |
| 1,113,389 | Oct. 13, 1914 | F.E. Walden | Wrench | alligator wrenches |
| 1,168,844 | Jan. 18, 1916 | J.J. Bartenstein | Wrench | quick adjust wrenches |
| 1,186,690 | Jun. 13, 1916 | B.F. Shafer | Wrench | quick adjust wrenches |
| 1,261,540 | Apr. 02, 1918 | H.V. Hughes | Wrench | quick adjust wrenches |
