| All Patents in class 81/412 |
Patents 1 -
15
of 26
      |
| Number | Date | Patentee | Title | Type |
| 178,902 | Jun. 20, 1876 | T. Booth | Pipe-Wrench | pliers type wrenches |
| 295,885 | Mar. 25, 1884 | H.S. Pullman | Pipe-Tongs | pliers |
| 637,251 | Nov. 21, 1899 | A.L. Hamilton | Wrench | pliers type wrenches |
| 740,553 | Oct. 06, 1903 | J.A. Schlehr, N. Grandchamp | Bolt Holder | pliers |
| 826,153 | Jul. 17, 1906 | A.H. De Groff | Wrench | pliers type wrenches |
| 957,560 | May 10, 1910 | G.L. Holt | Pliers or Pipe-Tongs | pliers |
| 1,016,296 | Feb. 06, 1912 | J.A. Schlehr | Bolt Holder | pliers |
| 1,122,165 | Dec. 22, 1914 | L. Schoening | Pliers | pliers |
| 1,175,391 | Mar. 14, 1916 | C.N. Waterhouse | Improvement in Pliers | pliers |
| 1,216,886 | Feb. 20, 1917 | W.S. Thomson | Gas Pliers | pliers |
| 1,236,138 | Aug. 07, 1917 | W.A. Bernard | Hand Tool | pliers |
| 1,341,193 | May 25, 1920 | R.H. Owen | Pliers | pliers |
| 1,442,083 | Jan. 16, 1923 | A.J. Meyer | Combined Wrench and Pliers | pliers |
| 1,540,464 | Jun. 02, 1925 | C.S. Edwards | Pliers | pliers |
| 1,541,248 | Jun. 09, 1925 | E.R. Carlson | Pliers | pliers |
