| All Patents in class 81/409 |
Patents 16 -
27
of 27
      |
| Number | Date | Patentee | Title | Type |
| 211,707 | Jan. 28, 1879 | L.Y. Cowl | Pipe-Tongs | pipe tongs |
| 238,959 | Mar. 15, 1881 | S.B. Parker | pocket screwdriver | screwdriver handles |
| 297,640 | Apr. 29, 1884 | F. Schmemann | Wrench | pipe wrenches |
| 340,516 | Apr. 20, 1886 | W. Moston | Improvement In Pipe-Tongs | pipe tongs |
| 375,712 | Dec. 27, 1887 | C.E. Murray | Improvements in Pipe and Nut Wrenches | wrench combination tools |
| 437,102 | Sep. 23, 1890 | C.W. Dixon | Wrench | quick adjust wrenches |
| 441,199 | Nov. 25, 1890 | S.D. Shambarger | Wrench | quick adjust wrenches |
| 583,699 | Jun. 01, 1897 | J.C. Burgess | Pipe Wrench | pipe wrenches |
| 2,368,906 | Feb. 06, 1945 | A.A. Westman | Wire Cutter | pliers |
| 2,379,107 | Jun. 26, 1945 | W. Scheck | Clamp Wrench | auxiliary levers on wrenches |
| 2,811,068 | Oct. 29, 1957 | B. Pepperdine, estate of (deceased) | Plier Type, Positionable Fulcrum, Parallel Jaw Wrench | pliers |
| 5,020,399 | Jun. 04, 1991 | D.M. Eggert, J.R. Annis | Self-Adjusting Pliers with Curved Handles | pliers |
