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| All Patents in class 123/90.47 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 569,564 | Oct. 13, 1896 | F.C. Olin | Gas Engine | |
 | 705,058 | Jul. 22, 1902 | J.B. Fenner | Operating Mechanism for Gas Engine Valves, &c. | |
| 1,260,847 | Mar. 26, 1918 | A. Winton | Explosive Engine | ||
| 1,339,839 | May 11, 1920 | A. Winton | Cam Shaft Structure and Oiling Mechanism for Internal Combustion Motors | ||
| 2,631,576 | Mar. 17, 1953 | C.H. Schowalter | Valve Operating Mechanism | ||