| All Patents in class 81/90.9 |
Patents 1 -
10
of 31
      |
| Picture | Number | Date | Patentee | Title |
 | 126,506 | May 07, 1872 | W.C. Westerfield | Improvement in Pipe-Wrenches |
 | 151,639 | Jun. 02, 1874 | J.B. Westwick | Pipe Wrenches |
 | 159,234 | Jan. 26, 1875 | J.B. Westwick | Combined Pipe-Tongs and Wrench |
 | 172,365 | Jan. 18, 1876 | A.F. Gates, E.H. Adams | Pipe-Wrench |
 | 291,266 | Jan. 01, 1884 | N.W. Vandegrift, F. Armstrong | Pipe Wrench |
 | 327,559 | Oct. 06, 1885 | A. Langstrom | Wrench |
 | 328,601 | Oct. 20, 1885 | G.F. Newell | Pipe Wrench |
 | 354,718 | Dec. 21, 1886 | F.C. Sawhill, T.D. McCarty | Pipe Wrench |
 | 419,854 | Jan. 21, 1890 | D.J. Hersey | Pipe Wrench |
 | 429,719 | Jun. 10, 1890 | C.C. Coleman | Pipe Wrench |
