| All Patents in class 81/154 |
Patents 31 -
38
of 38
      |
| Number | Date | Patentee | Title | Type |
| 918,450 | Apr. 13, 1909 | H.F. Howland | Wrench | wedge adjust wrenches |
| 955,974 | Apr. 26, 1910 | J.R. Long | Wrench | wedge adjust wrenches |
| 1,004,561 | Oct. 03, 1911 | W.H. Fitzgerald | Pipe-Wrench | pipe wrenches |
| 1,004,562 | Oct. 03, 1911 | W.H. Fitzgerald | Wrench | wedge adjust wrenches |
| 1,080,536 | Dec. 09, 1913 | O.P. Case | Wrench | nut wrenches |
| 1,251,789 | Jan. 01, 1918 | H.P. Larsen | Wrench | quick adjust wrenches |
| 1,481,250 | Jan. 22, 1924 | F.W. Werner, G.J. Bohn | Wrench | wedge adjust wrenches |
| 2,531,285 | Nov. 21, 1950 | E.L. Manspeaker | Wrench With Self-Adjusting Jaws | locking pliers |
