| All Patents in class 81/421 |
Patents 1 -
9
of 9
      |
| Number | Date | Patentee | Title | Type |
| 276,417 | Apr. 24, 1883 | J.H. Jencks | Cutting Pliers | pliers |
| 331,812 | Dec. 08, 1885 | J. Norris | Cushioned Nippers and Pliers For Glass Cutters' Use | pliers |
| 448,124 | Mar. 10, 1891 | C.C. Conroy | Improvements in Pipe-Wrenches and Pipe-Tongs | wrench jaw components |
| 505,835 | Oct. 03, 1893 | C.H. Laird, H.M. Kulp | Watchmaker's Pliers | pliers |
| 590,710 | Sep. 28, 1897 | W.S. Sheppard, E.K. Sheppard | Fruit Jar Holder | jar wrenches |
| 608,358 | Aug. 02, 1898 | A. Assorati | Wrench | quick adjust wrenches |
| 2,637,236 | May 05, 1953 | M.H. Vergnani, S.E. Vergnani, E. Vergnani | Liner for the Jaw Faces of Pipe Wrenches | pipe jaw attachments for wrenches |
| 4,726,266 | Feb. 23, 1988 | H. Wiener, H. Undin | Pair of Pliers | pliers |
| 4,829,805 | May 16, 1989 | T.J. Koehn | Crimp Tool | |
