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| All Patents in class 81/378 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 1,568,934 | Jan. 05, 1926 | R.J. Bristol, W.C. Tull | Wrench | |
 | 2,312,947 | Mar. 02, 1943 | A.A. Westman | Wrench | |
 | 2,519,973 | Aug. 22, 1950 | L.C. Mead | Wrench Type Pliers | |
 | 2,524,689 | Oct. 03, 1950 | A.A. Westman | Self-Locking Wrench | |
 | 2,751,801 | Jun. 26, 1956 | J.L. Hostetter | Self-Adjusting Plier-Type Toggle Locking Wrench | |
| 2,814,222 | Nov. 26, 1957 | E.G. Sanders | Ferrule Crimping Pliers with Replaceable Jaws | ||