| All Patents in class 81/92 |
Patents 1 -
10
of 57
      |
| Picture | Number | Date | Patentee | Title |
 | 86,138 | Jan. 26, 1869 | R.A. Copeland | Pipe Wrench & Cutter |
 | 101,114 | Mar. 22, 1870 | J. Faessler | Improvement in Screw-Wrenches |
 | 249,394 | Nov. 08, 1881 | I.B. Potts | Pipe Wrench |
 | 280,099 | Jun. 26, 1883 | J.J. Tower | Pipe Wrench |
 | 286,842 | Oct. 16, 1883 | G.W. Pittman | Wrench |
 | 300,717 | Jun. 17, 1884 | F.W. Merrick | Wrench |
 | 314,517 | Mar. 24, 1885 | I. Cressey | Wrench |
 | 322,256 | Jul. 14, 1885 | T.J. Campbell | Wrench |
 | 376,396 | Jan. 10, 1888 | D.R. Porter | Pipe Wrench |
 | 376,991 | Jan. 24, 1888 | H.P. Roberts | Wrench |
