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| All Patents in class 200/19.19 | |||||
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| Number | Date | Patentee | Title | Type | |
| 654,693 | Jul. 31, 1900 | H. Wegelin | Electrical Igniter for Hydrocarbon-Engines | ignition systems | |
| 2,699,657 | Jan. 18, 1955 | E.A. Vogel | Spark Advance Control Mechanism | ignition systems | |