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| All Patents in class 81/163 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,886,907 | Nov. 08, 1932 | C. Rugger | Wrench | screw adjust wrenches | |
| 4,016,782 | Apr. 12, 1977 | H.L. Guimarin | Adjustable Ratchet Wrench | wrench jaw components | |
| 4,112,792 | Sep. 12, 1978 | H.L. Guimarin | Adjustable Ratchet Wrench | ratchet wrenches | |