| All Patents in class 81/90.1 |
Patents 1 -
10
of 20
      |
| Picture | Number | Date | Patentee | Title |
 | 18,266 | Sep. 22, 1857 | H.D. Blake | Improvement in Hand-Wrenches |
 | 95,438 | Oct. 05, 1869 | A.B. Davis | Wrench |
 | 177,100 | May 09, 1876 | G.M. Curry | Pipe Tongs |
 | 202,089 | Apr. 09, 1878 | H. Badcock | Pipe Tongs |
 | 218,639 | Aug. 19, 1879 | W. Newcomb | Pipe-Wrenches |
 | 286,847 | Oct. 16, 1883 | H. Rhyn | Pipe Tongs |
 | 461,032 | Oct. 13, 1891 | C. Miller | Improved Wrench for Screwing and Unscrewing Pipes or Anything Round |
 | 497,260 | May 09, 1893 | G.P. Woelfel | Pipe Wrench |
 | 514,781 | Feb. 13, 1894 | F.S. Seymour | Wrench |
 | RE11,459 | Dec. 18, 1894 | G.P. Woelfel | Pipe Wrench |
