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| All Patents in class 123/90.38 | |||||
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| Picture | Number | Date | Patentee | Title | |
| 577,536 | Feb. 23, 1897 | A. Peugeot | Oil Engine | ||
| 664,632 | Dec. 25, 1900 | W.K. Freeman | Internal Combustion Engine | ||
 | 1,108,265 | Aug. 25, 1914 | W. Spacke, D.T. Brownlee, F.W. Spacke | Internal Combustion Engine | |
| 1,287,550 | Dec. 10, 1918 | A.E. Winckler | Explosive Engine | ||
| 1,339,839 | May 11, 1920 | A. Winton | Cam Shaft Structure and Oiling Mechanism for Internal Combustion Motors | ||
 | 1,458,223 | Jun. 12, 1923 | A.Y. Edwards | Valve Mechanism for Internal Combustion Engines | |