| All Patents in class 81/164 |
Patents 1 -
15
of 35
      |
| Number | Date | Patentee | Title | Type |
| 2,991 | Mar. 04, 1843 | J. Williams, Jr. | Screw-Wrench | screw adjust wrenches |
| 50,748 | Oct. 31, 1865 | J.C. Chapman, D.C. Stillson | Improved Tool for Turning Gas-Pipe, etc. | pipe wrenches |
| 52,487 | Feb. 06, 1866 | J.C. Conner | Improvement in Wrenches | screw adjust wrenches |
| 60,380 | Dec. 11, 1866 | J.V. Jepson | Improved Tool for Cutting Tubes | pipe wrenches |
| 78,047 | May 19, 1868 | J.L. Brierly | Improvement in Pipe-Wrench and Cutter | pipe wrenches |
| 94,241 | Aug. 31, 1869 | J.C. Chapman, A. Robes | Improvement in Pipe-Wrench and Pipe-Cutter | pipe wrenches |
| 170,492 | Nov. 30, 1875 | H. Port | Improvement in Wrenches | screw adjust wrenches |
| 191,010 | May 22, 1877 | J.P. Mitchell | Improvement in Wrenches | screw adjust wrenches |
| 215,039 | May 06, 1879 | C.E. Billings | Tap Wrench | tap wrenches and die stocks |
| 221,633 | Nov. 11, 1879 | J.H. Vinton | Pipe-Wrench | wrench handle components |
| 231,023 | Aug. 10, 1880 | J. Everding | Pipe Wrench | pipe wrenches |
| 258,137 | May 16, 1882 | J. Schwegler | Wrench | screw adjust wrenches |
| 258,673 | May 30, 1882 | J.E. Preston | Wrench | wrench jaw components |
| 290,106 | Dec. 11, 1883 | H. Port | Convertible Tool | combination tools |
| 325,942 | Sep. 08, 1885 | B.F. Lancaster | Wrench | axle nut wrenches |
