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| All Patents in class 318/125 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,797,253 | Mar. 24, 1931 | C.S. Weyandt | Reciprocating motor | handheld power tools | |
| 2,403,034 | Jul. 02, 1946 | C.S. Weyandt, E.J. Missien | Intermittent current operated motor | handheld power tools | |