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| All Patents in class 123/25F | |||||
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| Number | Date | Patentee | Title | Type | |
| 343,745 | Jun. 15, 1886 | S. Wilcox | Gas Engine | gas and gasoline engines | |
| 861,411 | Jul. 30, 1907 | C.W. Weiss | Internal Combustion Engine | oil engines | |