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| All Patents in class 310/127 | |||||
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| Number | Date | Patentee | Title | Type | |
| 432,652 | Jul. 22, 1890 | E. Thomson | Welding or other dynamo | welding | |
| 2,446,761 | Aug. 10, 1948 | K.A. Harmon | Combined magneto and alternator | ignition systems | |