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| Patents for Fred V. Hart | |||||
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| Number | Date | Patentee | Title | Type | |
| 858,844 | Jul. 02, 1907 | F.V. Hart, E.E. Winkley | Hydrocarbon Motor | gas and gasoline engines | |
| 909,728 | Jan. 12, 1909 | F.V. Hart, E.E. Winkley | Hydrocarbon Motor | gas and gasoline engines | |
| 1,128,208 | Feb. 09, 1915 | F.V. Hart, E.E. Winkley | Hydrocarbon Motor | gas and gasoline engines | |
| 1,145,854 | Jul. 06, 1915 | F.V. Hart, E.E. Winkley | Carbureter for Hydrocarbon Motors | carburetors | |