| All Patents in class 81/100 |
Patents 31 -
45
of 65
      |
| Number | Date | Patentee | Title | Type |
| 502,870 | Aug. 08, 1893 | W.E. Badger | Wrench | pipe wrenches |
| 514,936 | Feb. 20, 1894 | W. King | Pipe Tongs | pipe tongs |
| 546,101 | Sep. 10, 1895 | A.W. Ingelson | Universal Pipe Tongs | pipe wrenches |
| 551,689 | Dec. 17, 1895 | C.P. Payne | Pipe Wrench | pipe and nut combination wrenches |
| 567,229 | Sep. 08, 1896 | W.I. Freeman | Pipe Wrench | pipe wrenches |
| 573,999 | Dec. 29, 1896 | J.H. Pierce | Pipe Wrench | pipe wrenches |
| 589,046 | Aug. 31, 1897 | C.A. Terry | Wrench | quick adjust wrenches |
| 594,348 | Nov. 23, 1897 | J.J. Haldeman | Pipe Wrench | pipe wrenches |
| D31,142 | Jul. 04, 1899 | O. Lannon | Pipe Wrench Jaw | wrench jaw components |
| 631,056 | Aug. 15, 1899 | W.E. Berry, I.S. Van Etten | Pipe Wrench | pipe wrenches |
| 643,522 | Feb. 13, 1900 | G. McKercher | Improvement in Pipe-Wrenches | quick adjust wrenches |
| 643,632 | Feb. 20, 1900 | A.J. Cooper | Wrench | pipe wrenches |
| 653,767 | Jul. 17, 1900 | W.S. Emerson | Wrench | wrench jaw components |
| 700,087 | May 13, 1902 | H.F. Renner | Pipe Wrench | pipe wrenches |
| 729,504 | May 26, 1903 | G. McKercher | Wrench | pipe wrenches |
