| All Patents in class 81/92 |
Patents 1 -
15
of 57
      |
| Number | Date | Patentee | Title | Type |
| 86,138 | Jan. 26, 1869 | R.A. Copeland | Pipe Wrench & Cutter | combination tools |
| 101,114 | Mar. 22, 1870 | J. Faessler | Improvement in Screw-Wrenches | wrench jaw components |
| 249,394 | Nov. 08, 1881 | I.B. Potts | Pipe Wrench | pipe wrenches |
| 280,099 | Jun. 26, 1883 | J.J. Tower | Pipe Wrench | wrench jaw components |
| 286,842 | Oct. 16, 1883 | G.W. Pittman | Wrench | quick adjust wrenches |
| 300,717 | Jun. 17, 1884 | F.W. Merrick | Wrench | wrench combination tools |
| 314,517 | Mar. 24, 1885 | I. Cressey | Wrench | pipe wrenches |
| 322,256 | Jul. 14, 1885 | T.J. Campbell | Wrench | pipe wrenches |
| 376,396 | Jan. 10, 1888 | D.R. Porter | Pipe Wrench | pipe wrenches |
| 376,991 | Jan. 24, 1888 | H.P. Roberts | Wrench | pipe and nut combination wrenches |
| 379,519 | Mar. 13, 1888 | T.F. Krueger | Pipe Wrench | pipe wrenches |
| 389,899 | Sep. 25, 1888 | D.R. Porter | Pipe Wrench | quick adjust wrenches |
| 413,961 | Oct. 29, 1889 | D.R. Porter | Pipe Wrench | pipe wrenches |
| 433,098 | Jul. 29, 1890 | T.P. Schwartz | Combination Tool | combination tools |
| 444,937 | Jan. 20, 1891 | S. Hussey | Wrench | pipe and nut combination wrenches |
