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| All Patents in class 123/159 | |||||
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| Number | Date | Patentee | Title | Type | |
| 480,272 | Aug. 09, 1892 | E.I. Nichols | Ignitor for Gas Engines | ignition systems | |
| 624,975 | May 16, 1899 | C. Quast | Gas Engine | gas and gasoline engines | |
| 640,252 | Jan. 02, 1900 | C.R. Alsop | Igniter for Gas Engines | ignition systems | |
| 649,778 | May 15, 1900 | D.M. Tuttle | Electrical Igniter for Gas-Engines | ignition systems | |