| All Patents in class 81/90.9 |
Patents 1 -
15
of 31
      |
| Number | Date | Patentee | Title | Type |
| 126,506 | May 07, 1872 | W.C. Westerfield | Improvement in Pipe-Wrenches | pipe wrenches |
| 151,639 | Jun. 02, 1874 | J.B. Westwick | Pipe Wrenches | pipe tongs |
| 159,234 | Jan. 26, 1875 | J.B. Westwick | Combined Pipe-Tongs and Wrench | pipe tongs |
| 172,365 | Jan. 18, 1876 | A.F. Gates, E.H. Adams | Pipe-Wrench | self-adjust wrenches |
| 291,266 | Jan. 01, 1884 | N.W. Vandegrift, F. Armstrong | Pipe Wrench | pipe wrenches |
| 327,559 | Oct. 06, 1885 | A. Langstrom | Wrench | wrench jaw components |
| 328,601 | Oct. 20, 1885 | G.F. Newell | Pipe Wrench | alligator wrenches |
| 354,718 | Dec. 21, 1886 | F.C. Sawhill, T.D. McCarty | Pipe Wrench | pipe wrenches |
| 419,854 | Jan. 21, 1890 | D.J. Hersey | Pipe Wrench | pipe wrenches |
| 429,719 | Jun. 10, 1890 | C.C. Coleman | Pipe Wrench | pipe wrenches |
| 441,188 | Nov. 25, 1890 | W.E. Murbarger | Pipe Wrench | pipe wrenches |
| 463,784 | Nov. 24, 1891 | G.H. Buzzell | Pipe Wrench | pipe wrenches |
| 487,331 | Dec. 06, 1892 | J.W. Kellam | Adjustable Flange Wrench | flange wrenches |
| 494,310 | Mar. 28, 1893 | J. Wenning | Combined Pipe Wrench, Monkey Wrench and Flange Holder | pipe and nut combination wrenches |
| RE11,394 | Dec. 05, 1893 | J.W. Kellam | Adjustable Flange Wrench | flange wrenches |
