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| All Patents in class 123/65VA | |||||
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| Picture | Number | Date | Patentee | Title | |
| 391,486 | Oct. 23, 1888 | W.S. Sharpneck | Gas Engine | ||
| 585,601 | Jun. 29, 1897 | H.B. Steele | Gas Engine | ||
| 625,387 | May 23, 1899 | F. Dürr | Valveless two-Cycle Hydrocarbon Engine | ||
 | 1,075,889 | Oct. 14, 1913 | E.J. Woolf | Two-Cycle Explosive Engine | |
 | 1,121,153 | Dec. 15, 1914 | E.J. Woolf | Explosive-Engine. | |
| 1,686,245 | Oct. 02, 1928 | H.G. Mueller | Reciprocating Steam Engine | ||