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| All Patents in class 310/193 | |||||
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| Number | Date | Patentee | Title | Type | |
| 829,975 | Sep. 04, 1906 | J.C. Lincoln | Variable Speed Electric Motor | DC motors | |
| 1,108,087 | Aug. 18, 1914 | E.M. Tornmin | Automobile generator for operating headlights | electrical devices | |
| 1,442,854 | Jan. 23, 1923 | J. Burke | Electric generator | electric generators | |