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| All Patents in class 239/95 | |||||
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| Number | Date | Patentee | Title | Type | |
| 922,383 | May 18, 1909 | J. Brons | Hydrocarbon Engine | oil engines | |
| 1,346,204 | Jul. 13, 1920 | R.M. Hvid | Valve for Hydrocarbon Engine | valves | |