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| All Patents in class 60/39.25 | |||||
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| Number | Date | Patentee | Title | Type | |
| RE3,313 | Feb. 23, 1869 | P. Shaw | Hot Air Engine | hot air engines | |
| 278,255 | May 22, 1883 | L.H. Nash | Gas Engine | gas and gasoline engines | |
| 642,949 | Feb. 06, 1900 | P.B. Verity, J.L. Baillie | Combustion Engine | gas turbines | |