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| All Patents in class 181/229 | |||||
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| Number | Date | Patentee | Title | Type | |
| 644,027 | Feb. 20, 1900 | W. Baines | Hydrocarbon-Vaporizer for Explosive-Engines | fuel systems | |
| 1,096,482 | May 12, 1914 | A. Winton | Carbureter | carburetors | |