| All Patents in class 81/DIG.9 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 536,165 | Mar. 19, 1895 | A.L. Winge | Wrench | quick adjust wrenches |
| 619,193 | Feb. 07, 1899 | M. Lemley | Wrench | ratchet wrenches |
| 645,265 | Mar. 13, 1900 | C. Kingsley | Ratchet Wrench For Tightening the Truss Rods of Railroad Cars | ratchet wrenches |
| 837,809 | Dec. 04, 1906 | J.J. Dixon | Pipe Wrench | pipe wrenches |
| 1,053,931 | Feb. 18, 1913 | G.F. Lebus, W.R. Osborne | Well Drill Wrench | pipe tongs |
| 1,407,238 | Feb. 21, 1922 | W.J. Twiss | Pipe Wrench | pipe wrenches |
| 1,611,808 | Dec. 21, 1926 | W.L. Bessolo | Tongs | chain and strap wrenches |
| 1,919,468 | Jul. 25, 1933 | O.V. Jones | Tong | pipe tongs |
| 2,005,161 | Jun. 18, 1935 | T. Petersen | Pipe vise | pipe and chain vises |
