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| All Patents in class 60/281 | |||||
| Number | Date | Patentee | Title | Type | |
| 160,130 | Feb. 23, 1875 | P. Vera | Gas-Engine | gas and gasoline engines | |
| 623,980 | May 02, 1899 | F. Burger | Automatic Explosive Compression Engine | gas and gasoline engines | |