| All Patents in class 81/117 |
Patents 1 -
15
of 20
      |
| Number | Date | Patentee | Title | Type |
| 173,845 | Feb. 22, 1876 | E.G. Clinch | Pipe-Wrench | pipe wrenches |
| 207,182 | Aug. 20, 1878 | B.S. Hyers | Improvements in Pipe and Nut Wrenches | pipe and nut combination wrenches |
| 366,246 | Jul. 12, 1887 | R.W. Philips | Self-Adjusting Pipe Wrench | self-adjust wrenches |
| 382,391 | May 08, 1888 | G.G. Smith | Pipe Wrench | pipe wrenches |
| 421,023 | Feb. 11, 1890 | J.W. McCoy, W.G. Bartlett | Pipe Wrench | alligator wrenches |
| 503,677 | Aug. 22, 1893 | S.W. Putnam | Wrench | wrenches |
| 507,587 | Oct. 31, 1893 | T.C. Lippitt | Nut Wrench | screw adjust wrenches |
| 556,834 | Mar. 24, 1896 | D.R. Porter | Pipe Wrench | pipe wrenches |
| 615,643 | Dec. 06, 1898 | J.F. Strahle | Wrench | alligator wrenches |
| 625,716 | May 23, 1899 | C. Baxter | Spanner | screw adjust wrenches |
| 649,092 | May 08, 1900 | J. Willmann | Wrench | pipe wrenches |
| 933,096 | Sep. 07, 1909 | W.H. Munro | Wrench | pipe wrenches |
| 972,052 | Oct. 04, 1910 | J. Boulieu | Wrench | self-adjust wrenches |
| 1,305,571 | Jun. 03, 1919 | A. Sporup | Automatically Adjustable Wrench | self-adjust wrenches |
| 1,332,922 | Mar. 09, 1920 | I.J. Short | Self-Adjustable Wrench | self-adjust wrenches |
