| All Patents in class 81/146 |
Patents 1 -
15
of 33
      |
| Number | Date | Patentee | Title | Type |
| 8,922 | May 04, 1852 | A. Hotchkiss | Adjustable Screw-Slide Wrench | screw adjust wrenches |
| 19,954 | Apr. 13, 1858 | E.S. Scripture | Improvement in Screw-Wrenches | nut wrenches |
| 38,316 | Apr. 28, 1863 | A.Y. McDonald | Improvement in Screw-Wrenches | nut wrenches |
| 76,519 | Apr. 07, 1868 | A.S. Petrie | Improvement inWrenches | nut wrenches |
| 109,949 | Dec. 06, 1870 | E.S. Scripture | Improved Mode of Constructing, Applying, and Managing a Pawl When Applied to a Notch or Tooth-Slide Wrench | quick adjust wrenches |
| 132,057 | Oct. 08, 1872 | O.W. Cutler, T. Cooper | Improvement in Adjustable Slide-Wrenches | quick adjust wrenches |
| 144,036 | Oct. 28, 1873 | E.S. Scripture | Wrenches | quick adjust wrenches |
| 171,333 | Dec. 21, 1875 | J.A. White | Pipe-Wrench | quick adjust wrenches |
| 186,197 | Jan. 16, 1877 | P. Chapin, Sr. | Improvements Pertaining to Adjustable Wrenches | screw adjust wrenches |
| 331,189 | Nov. 24, 1885 | J. Du Shane | Rapid Transit Wrench | quick adjust wrenches |
| 361,258 | Apr. 19, 1887 | S.J. Benson | Pipe Wrench | pipe wrenches |
| 379,519 | Mar. 13, 1888 | T.F. Krueger | Pipe Wrench | pipe wrenches |
| 389,899 | Sep. 25, 1888 | D.R. Porter | Pipe Wrench | quick adjust wrenches |
| 426,223 | Apr. 22, 1890 | F. Virgien | Pipe Wrench | pipe wrenches |
| 497,135 | May 09, 1893 | J.B. Shaffer | Wrench | pipe and nut combination wrenches |
