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| All Patents in class 123/25E | |||||
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| Number | Date | Patentee | Title | Type | |
| 289,019 | Nov. 27, 1883 | L.H. Nash | Gas Engine | gas and gasoline engines | |
| 658,367 | Sep. 25, 1900 | E. Apperson, E. Haynes | Explosive Engine | gas and gasoline engines | |