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| All Patents in class 123/90.26 | |||||
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| Picture | Number | Date | Patentee | Title | |
 | 312,497 | Feb. 17, 1885 | L.H. Nash | Gas Engine | |
 | 569,386 | Oct. 13, 1896 | F.C. Olin | Gas Engine | |
| 610,682 | Sep. 13, 1898 | W.M. Kelch, J.N. Kelly | Gas Engine | ||
| 816,062 | Mar. 27, 1906 | I.S. Barnett | Gas Engine | ||
| 868,371 | Oct. 15, 1907 | H. Tabor | Valve Gear for Explosive Engines | ||
 | 1,458,223 | Jun. 12, 1923 | A.Y. Edwards | Valve Mechanism for Internal Combustion Engines | |