| All Patents in class 81/330 |
Patents 1 -
11
of 11
      |
| Number | Date | Patentee | Title | Type |
| 522,471 | Jul. 03, 1894 | J. Kohler | Combination Tool For Pipe Fitting | pipe tongs |
| 587,974 | Aug. 10, 1897 | J.E. Colton, E.L. Keith | Lock Jaw Wrench | quick adjust wrenches |
| 750,994 | Feb. 02, 1904 | M. McKinley | Wrench | combination tools |
| 831,264 | Sep. 18, 1906 | B. Charnock | Wrench | axle nut wrenches |
| 1,086,078 | Feb. 03, 1914 | H.R. Palmer | Plier Wrench | pliers |
| 2,206,251 | Jul. 02, 1940 | F.C. Fischer | Wrench | locking pliers |
| 2,325,245 | Jul. 27, 1943 | J. Hahn | Plier Type Wrench | pliers type wrenches |
| 2,366,015 | Dec. 26, 1944 | F.C. Fischer | Wrench | locking pliers |
| 2,496,308 | Feb. 07, 1950 | R.J. Champayne, W.E. Pugh | Lever Actuated Pivoted Jaw Wrench | |
| 2,524,376 | Oct. 03, 1950 | M.A. Clark | Sliding Side Jaw Wrench Having Toggle Means for Moving and Locking the Movable Jaw Relative to the Fixed Jaw | auxiliary levers on wrenches |
| 2,607,250 | Aug. 19, 1952 | I. Zeissl | Jaw Adjusting Means for Plier-Type Wrenches | pliers |
