| All Patents in class 81/423 |
Patents 16 -
30
of 51
      |
| Number | Date | Patentee | Title | Type |
| 240,067 | Apr. 12, 1881 | D. Worden | Pipe Tongs | pipe tongs |
| 244,269 | Jul. 12, 1881 | C.H. Lovrien | Pipe Tongs | pipe tongs |
| 250,029 | Nov. 22, 1881 | D. Worden | Pipe Tongs | pipe tongs |
| 282,256 | Jul. 31, 1883 | E.F. Barnes | Improvements in Pipe-Tongs and Wrench Combined | pipe tongs |
| 287,378 | Oct. 23, 1883 | H. Herbert | Pipe Tongs and Cutter | pipe tongs |
| 326,978 | Sep. 29, 1885 | W. Harris | Improvement in Pipe-Tongs | pipe tongs |
| 331,812 | Dec. 08, 1885 | J. Norris | Cushioned Nippers and Pliers For Glass Cutters' Use | pliers |
| 335,694 | Feb. 09, 1886 | T.G. Hall | Pliers | pliers |
| 367,786 | Aug. 09, 1887 | E.O. Carvin | Improvement in Pipe-Tongs | pipe wrenches |
| 381,544 | Apr. 24, 1888 | O.F. Garvey | Improvement in Soldering Pliers or Tweezers | pliers |
| 396,753 | Jan. 29, 1889 | F.C. Knowles, R.B. Magee | Pipe Tongs | pipe tongs |
| 440,214 | Nov. 11, 1890 | D.B. Whitehill | Rod and Pipe Tongs | pipe tongs |
| 442,426 | Dec. 09, 1890 | J. Donnelly | Pliers | pliers |
| 448,451 | Mar. 17, 1891 | G.W. Miller | Jaws For Clamping Tools | pliers |
| 454,893 | Jun. 30, 1891 | J.E. Wakefield | Pipe-Wrench | quick adjust wrenches |
