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| All Patents in class 123/41.32 | |||||
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| Number | Date | Patentee | Title | Type | |
| 637,975 | Nov. 28, 1899 | E. Rappe | Gas Engine | gas and gasoline engines | |
| 1,641,207 | Sep. 06, 1927 | G.T. Strite | Cultivating means | ||