| All Patents in class 81/390 |
Patents 16 -
25
of 25
      |
| Number | Date | Patentee | Title | Type |
| 1,280,405 | Oct. 01, 1918 | W.A. Wright, J.S. Collison | Wrench | locking pliers |
| 1,309,874 | Jul. 15, 1919 | W.D. Arnot | Combined Wrench and Pliers | screw adjust wrenches |
| 1,375,530 | Apr. 19, 1921 | C.G. Moline | Wrench | screw adjust wrenches |
| 1,407,577 | Feb. 21, 1922 | T.J. Pryor | Wrench or Spanner | pliers type wrenches |
| 1,717,725 | Jun. 18, 1929 | A.A. McGill | Sliding Jaw Tool | quick adjust wrenches |
| 1,725,301 | Aug. 20, 1929 | A.N. Plante | Wrench | wrench handle components |
| 2,377,612 | Jun. 05, 1945 | G.H. Clark | Wrench | pipe wrenches |
| 2,495,699 | Jan. 31, 1950 | G.H. Clark | Grip Tightening Device for Pipe Wrenches | pipe wrenches |
| 2,533,436 | Dec. 12, 1950 | J.S. Collison | Self-Locking Wrench | locking pliers |
| 2,691,317 | Oct. 12, 1954 | E.T. Olson | Locking Device For Pipe Wrenches | pipe wrenches |
