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| All Patents in class 123/533 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 151,129 | May 19, 1874 | J. Hock | Petroleum Dynamic Engines | ||
 | 432,260 | Jul. 15, 1890 | G.B. Brayton | Hydrocarbon Engine | |
| 473,293 | Apr. 19, 1892 | J.A. Charter | Gas Engine | ||
| 514,359 | Feb. 06, 1894 | W.W. Grant | Vapor Gas Engine | ||
| 549,939 | Nov. 19, 1895 | W. Seck | Marine Hydrocarbon Motor | ||
| 560,149 | May 12, 1896 | A.F. Rober | Vapor Engine | ||
| 615,049 | Nov. 29, 1898 | M.H. Rumpf | Internal Combustion Engine | ||
 | 1,316,346 | Sep. 16, 1919 | B.F. Augustine | Rotary Hydrocarbon Engine | |