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| All Patents in class 239/533.7 | |||||
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| Number | Date | Patentee | Title | Type | |
| 723,956 | Mar. 31, 1903 | C.W. Weiss | Explosive Engine | oil engines | |
| 1,346,204 | Jul. 13, 1920 | R.M. Hvid | Valve for Hydrocarbon Engine | valves | |
| 1,876,980 | Sep. 13, 1932 | J.H. Lentell, Jr. | Fuel Injection Device | fuel injection apparatus | |