| All Patents in class 81/DIG6 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 50,748 | Oct. 31, 1865 | J.C. Chapman, D.C. Stillson | Improved Tool for Turning Gas-Pipe, etc. | pipe wrenches |
| 65,114 | May 28, 1867 | B.F. Perkins | Vise Handle Holder | bench vises |
| 68,431 | Sep. 03, 1867 | J.N. Freestone | Improved Pipe-Wrench | pipe wrenches |
| 219,719 | Sep. 16, 1879 | T.G. Hall | Improvement in Adjustable Faced Vises | vises |
| 357,306 | Feb. 08, 1887 | C.S. Bonney | Pipe Vise | vises |
| 391,321 | Oct. 16, 1888 | C.J. Hermann | Vise | bench vises |
| 650,974 | Jun. 05, 1900 | A.F. Jackson | Pipe Wrench | pipe wrenches |
| 1,243,210 | Oct. 16, 1917 | G.A. Parmenter | Wrench | quick adjust wrenches |
| 1,734,734 | Nov. 05, 1929 | G.C. Lawson | Wrench | pipe wrenches |
