| All Patents in class 81/151 |
Patents 1 -
10
of 16
      |
| Picture | Number | Date | Patentee | Title |
 | 16,158 | Dec. 02, 1856 | O.O. Witherell | Improvement in Wrenches |
 | 61,097 | Jan. 08, 1867 | T. Pratt | Improved Wrench |
 | 74,245 | Feb. 11, 1868 | T. Pratt | Improvement in Wrenches |
 | 86,967 | Feb. 16, 1869 | J.N. Arvin | Wrench |
 | 415,969 | Nov. 26, 1889 | G.F. Hall | Tool Clamp |
 | 591,196 | Oct. 05, 1897 | W.E. Pugsley | Nut and Pipe Wrench |
 | 606,690 | Jul. 05, 1898 | T. Spriggs | Wrench |
 | 632,603 | Sep. 05, 1899 | M.M. Waddy | Nut Wrench |
 | 632,610 | Sep. 05, 1899 | S.A. Louder, D.K. Wilhelm | Wrench |
 | 1,363,343 | Dec. 28, 1920 | H.G. Norwood | Wrench |
