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| All Patents in class 123/52.2 | |||||
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| Number | Date | Patentee | Title | Type | |
| 289,362 | Nov. 27, 1883 | F.W. Turner | Gas Engine | gas and gasoline engines | |
| 399,907 | Mar. 19, 1889 | S. Lawson | Gas Engine | gas and gasoline engines | |