| All Patents in class 81/401 |
Patents 1 -
13
of 13
      |
| Number | Date | Patentee | Title | Type |
| 144,253 | Nov. 04, 1873 | J.R. Brown | Pipe-Tongs | pipe tongs |
| 145,929 | Dec. 30, 1873 | J.R. Brown | Pipe-Tongs | pipe tongs |
| 167,085 | Aug. 24, 1875 | J.M. Evarts | Pipe-Tongs | pipe tongs |
| 197,756 | Dec. 04, 1877 | E.D. Barrett | Pipe-Wrench or Tongs | pipe tongs |
| 217,117 | Jul. 01, 1879 | W.B. Killough | Wrench | pliers type wrenches |
| 372,080 | Oct. 25, 1887 | W.H. Mitchell | Combination Tool | pipe and nut combination wrenches |
| 574,487 | Jan. 05, 1897 | H.J. Kapka | Wrench | screw adjust wrenches |
| 2,259,216 | Oct. 14, 1941 | H.W. Small | Wrench | screw adjust wrenches |
| 2,312,947 | Mar. 02, 1943 | A.A. Westman | Wrench | locking pliers |
| 2,320,303 | May 25, 1943 | C.O. Ross | Mechanic's Tool | locking pliers |
| 2,443,153 | Jun. 08, 1948 | G.W. Wells | Toggle Operated Wrench with Toggle Release Lever | locking pliers |
| 2,452,625 | Nov. 02, 1948 | H. Alpers | Screw and Toggle Adjusted Wrench and Clamp | wrench adjustment types |
| 2,462,709 | Feb. 22, 1949 | E.D. Ball | Toggle Actuated Tool and Release Therefor | locking pliers |
