| All Patents in class 81/408 |
Patents 16 -
23
of 23
      |
| Number | Date | Patentee | Title | Type |
| 754,740 | Mar. 15, 1904 | E. Bordewisch, O.C. Wovries | Adjustable Wrench | quick adjust wrenches |
| 1,445,280 | Feb. 13, 1923 | J. Jordan | Wrench | pliers type wrenches |
| 1,490,902 | Apr. 22, 1924 | A.C. Allan | Pliers, Wrench or the Like | pliers type wrenches |
| 1,546,139 | Jul. 14, 1925 | R.F. Lévéque | Pliers | pliers |
| 1,873,805 | Aug. 23, 1932 | A.C. Allan | Pliers Or The Like | pliers type wrenches |
| 2,531,285 | Nov. 21, 1950 | E.L. Manspeaker | Wrench With Self-Adjusting Jaws | locking pliers |
| 2,561,682 | Jul. 24, 1951 | B.G. Barnett | Pivoted Jaw Type, Toggle Actuated Wrench | locking pliers |
| 2,714,198 | Jul. 26, 1955 | H.F. Schoetzer | Ground Connector for Electric Welding | |
