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| All Patents in class 307/8 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,002,383 | Sep. 05, 1911 | V.A. Fynn | Dynamo-electric machine | electric generators | |
| 1,971,074 | Aug. 21, 1934 | G.G. Landis, J.F. Lincoln | Current Generation for Arc Welding and the Like | electric generators | |