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| All Patents in class 123/193.3 | |||||
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| Number | Date | Patentee | Title | Type | |
| 398,108 | Feb. 19, 1889 | C.T. Wiedling | Gas Engine | gas and gasoline engines | |
| 1,134,794 | Apr. 06, 1915 | A. Winton | Gas Engine | gas and gasoline engines | |