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| All Patents in class 60/794 | |||||
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| Number | Date | Patentee | Title | Type | |
| 34,333 | Feb. 04, 1862 | S.H. Roper | Hot Air Engine | hot air engines | |
| 269,146 | Dec. 12, 1882 | H. Wiedling | Gas Engine | gas and gasoline engines | |
| 666,368 | Jan. 22, 1901 | H.F. Wallman | Internal Combustion Engine | internal combustion engines | |