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| All Patents in class 261/64.3 | |||||
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| Number | Date | Patentee | Title | Type | |
| 367,936 | Aug. 09, 1887 | T. Shaw | Hydrocarbon and Gas Impulse Feeder for Gas Engines | carburetors | |
| 1,395,950 | Nov. 01, 1921 | W.J. En Earl | Vacuum Carbureter | carburetors | |