| All Patents in class 81/102 |
Patents 16 -
30
of 33
      |
| Number | Date | Patentee | Title | Type |
| 492,199 | Feb. 21, 1893 | H. Hammond | Pipe Tongs and Wrench | pipe tongs |
| 511,155 | Dec. 19, 1893 | C.B. Merritt | Pipe Wrench | self-adjust wrenches |
| 527,917 | Oct. 23, 1894 | J.D. Wilson | Pipe Wrench | pipe wrenches |
| 546,139 | Sep. 10, 1895 | J. Ford | Wrench | pipe wrenches |
| 551,879 | Dec. 24, 1895 | J. Welfle | Pipe Wrench | pipe wrenches |
| 561,274 | Jun. 02, 1896 | J.M. Palmer | Tongs for Turning Pipes | pipe tongs |
| 681,910 | Sep. 03, 1901 | F.P. Galvin | Pipe Wrench | pipe wrenches |
| 698,706 | Apr. 29, 1902 | E. Huntley | Wrench | pipe wrenches |
| 703,741 | Jul. 01, 1902 | G.E. Rothenbucher | Combination Wrench | pipe wrenches |
| 728,554 | May 19, 1903 | C.F. Doebler | Wrench | pipe wrenches |
| 765,007 | Jul. 12, 1904 | F.A. Headson | Pipe Wrench | pipe wrenches |
| 928,167 | Jul. 13, 1909 | G.C. Winslow | Wrench | pipe wrenches |
| 1,026,040 | May 14, 1912 | W.A. Hyle | Pipe Wrench | pipe wrenches |
| 1,055,724 | Mar. 11, 1913 | H.L. Dickson | Pipe Wrench | pipe wrenches |
| 1,060,391 | Apr. 29, 1913 | J.D. Wilson | Wrench | pipe wrenches |
