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| All Patents in class 200/276 | |||||
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| Number | Date | Patentee | Title | Type | |
| 1,411,787 | Apr. 04, 1922 | A.W. Kaufman | Timer | ignition systems | |
| 1,722,703 | Jul. 30, 1929 | T.G. Louis | Distributor | ignition systems | |