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| All Patents in class 310/156.61 | |||||
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| Number | Date | Patentee | Title | Type | |
| 2,300,117 | Oct. 27, 1942 | K.A. Harmon | Magneto | ignition systems | |
| 2,352,894 | Jul. 04, 1944 | S.K. Smart, K.A. Harmon | Magneto | ignition systems | |