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| All Patents in class 81/486 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 854,860 | May 28, 1907 | C.F. Weeber | Tool For Removing Engine Valves | |
 | 1,220,547 | Mar. 27, 1917 | A. Placek | Valve Spring Lifter | |
 | 1,234,967 | Jul. 31, 1917 | C.O. Throp | Valve Removing Tool | |