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| All Patents in class 60/737 | |||||
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| Number | Date | Patentee | Title | Type | |
| 421,477 | Feb. 18, 1890 | A. Schmid, J.C. Beckfeld | Gas Engine | gas and gasoline engines | |
| 611,813 | Oct. 04, 1898 | G.A. Marconnett | Thermal Expansion Engine | gas and gasoline engines | |