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| All Patents in class 123/306 | |||||
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| Number | Date | Patentee | Title | Type | |
| 418,417 | Dec. 31, 1889 | L.H. Nash | Gas Engine | gas and gasoline engines | |
| 435,439 | Sep. 02, 1890 | C.V. Lüde | Petroleum or Similar Motor | oil engines | |
| 579,378 | Mar. 23, 1897 | L. Bénier | Gas Engine | gas and gasoline engines | |