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| All Patents in class 123/185.2 | |||||
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| Number | Date | Patentee | Title | Type | |
| 293,762 | Feb. 19, 1884 | H.S. Maxim | Gas Motor | gas and gasoline engines | |
| 2,895,466 | Jul. 21, 1959 | A.W. Mall, W. Ziegler, C.A. Mattson | Chain saw starter mechanism | handheld chainsaws | |