| All Patents in class 81/93 |
Patents 16 -
23
of 23
      |
| Number | Date | Patentee | Title | Type |
| 516,191 | Mar. 13, 1894 | E.O. Ely | Combination Wrench | pipe and nut combination wrenches |
| 542,938 | Jul. 16, 1895 | H. McElroy | Improvements in Pipe Wrenches | pipe wrenches |
| 562,878 | Jun. 30, 1896 | E. Wright | Pipe Wrench | pipe wrenches |
| 574,513 | Jan. 05, 1897 | J.A. Barker | Wrench | screw adjust wrenches |
| 639,785 | Dec. 26, 1899 | J.C. Speirs | Pipe Wrench | pipe wrenches |
| 833,516 | Oct. 16, 1906 | M.G. Ewer | Pipe Wrench | pipe wrenches |
| 1,153,050 | Sep. 07, 1915 | W.F. Estes | Wrench | screw adjust wrenches |
| 2,188,161 | Jan. 23, 1940 | A.L. Rosenmund | Box Closing Tool | wire twisters |
