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| All Patents in class 123/179.29 | |||||
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| Number | Date | Patentee | Title | Type | |
| 403,376 | May 14, 1889 | J.A. Wharry, N. Rogers | Dynamo Speeder for Gas Engines | ignition systems | |
| 961,648 | Jun. 14, 1910 | C.E. Sargent | Ignition Magneto Mechanism for Air-Started Internal-Combustion Engines | magnetos | |