| All Patents in class 81/103 |
Patents 1 -
15
of 32
      |
| Number | Date | Patentee | Title | Type |
| 217,117 | Jul. 01, 1879 | W.B. Killough | Wrench | pliers type wrenches |
| 325,010 | Aug. 25, 1885 | D.R. Porter | Wrench | pipe wrenches |
| 340,436 | Apr. 20, 1886 | J.A. Fairbanks | Pipe Wrench | pipe wrenches |
| 390,402 | Oct. 02, 1888 | J. Rose | Pipe Wrench | pipe wrenches |
| 433,794 | Aug. 05, 1890 | F.W. Kasch | Wrench | pipe wrenches |
| 448,958 | Mar. 24, 1891 | R. Haberthur, J.M. Stowell | Wrench | quick adjust wrenches |
| 449,410 | Mar. 31, 1891 | H. Hammond | Improvements in Pipe and Other Wrenches | pipe wrenches |
| 453,736 | Jun. 09, 1891 | M. Cummins | Rod or Pipe Wrench | pipe wrenches |
| 482,109 | Sep. 06, 1892 | W.J. Walker | Pipe Wrench | quick adjust wrenches |
| 482,527 | Sep. 13, 1892 | D.R. Porter | Pipe Wrench | screw adjust wrenches |
| 491,255 | Feb. 07, 1893 | W.J. Walker | Pipe Wrench | quick adjust wrenches |
| 507,407 | Oct. 24, 1893 | S.C. Bole | Wrench | pipe wrenches |
| 531,299 | Dec. 25, 1894 | W.A. Blaisdell | Pipe-wrench | pipe wrenches |
| 546,443 | Sep. 17, 1895 | E. Wright | Pipe Wrench | pipe wrenches |
| 561,274 | Jun. 02, 1896 | J.M. Palmer | Tongs for Turning Pipes | pipe tongs |
