| All Patents in class 81/151 |
Patents 1 -
15
of 16
      |
| Number | Date | Patentee | Title | Type |
| 16,158 | Dec. 02, 1856 | O.O. Witherell | Improvement in Wrenches | nut wrenches |
| 61,097 | Jan. 08, 1867 | T. Pratt | Improved Wrench | quick adjust wrenches |
| 74,245 | Feb. 11, 1868 | T. Pratt | Improvement in Wrenches | quick adjust wrenches |
| 86,967 | Feb. 16, 1869 | J.N. Arvin | Wrench | nut wrenches |
| 415,969 | Nov. 26, 1889 | G.F. Hall | Tool Clamp | wrench handle components |
| 591,196 | Oct. 05, 1897 | W.E. Pugsley | Nut and Pipe Wrench | alligator wrenches |
| 606,690 | Jul. 05, 1898 | T. Spriggs | Wrench | wrenches |
| 632,603 | Sep. 05, 1899 | M.M. Waddy | Nut Wrench | nut wrenches |
| 632,610 | Sep. 05, 1899 | S.A. Louder, D.K. Wilhelm | Wrench | pipe and nut combination wrenches |
| 1,363,343 | Dec. 28, 1920 | H.G. Norwood | Wrench | alligator wrenches |
| 1,397,214 | Nov. 15, 1921 | T.S. Hose | Wrench | screw adjust wrenches |
| 1,417,196 | May 23, 1922 | V.L. Ochoa | Wrench | self-adjust wrenches |
| 1,440,381 | Jan. 02, 1923 | O.E. Edstrom | Adjustable Wrench | quick adjust wrenches |
| 1,459,583 | Jun. 19, 1923 | O.E. Edstrom | Adjustable Wrench | quick adjust wrenches |
| 1,517,162 | Nov. 25, 1924 | P.F. King | Plier Wrench | pliers |
