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| All Patents in class 81/142 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,720,650 | Jul. 09, 1929 | B.H. Purdy | Adjustable Wrench | quick adjust wrenches | |
| 3,101,018 | Aug. 20, 1963 | A.F. Andersen | Claw-Lever Actuated Slidable Side Jaw Wrench | self-adjust wrenches | |