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| All Patents in class 60/39.55 | |||||
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| Number | Date | Patentee | Title | Type | |
| 98,061 | Dec. 21, 1869 | A. Hendry | Steam and Caloric Engine | hot air engines | |
| 278,255 | May 22, 1883 | L.H. Nash | Gas Engine | gas and gasoline engines | |