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| All Patents in class 315/209M | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,137,875 | Nov. 22, 1938 | K.A. Harmon | Magneto | ignition systems | |
| 2,378,705 | Jun. 19, 1945 | R.V. Atwood, K.A. Harmon | Ignition system and magneto therefor | ignition systems | |