United States Patent 3158144
US Patent References:
/1737961.html
- - 1737961

Carburetor degasser
- - 2415336

Vacuum controlled device for engines
- - 2853064


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Primary Class:
123/198DC
Other Classes:
261/DIG.019, 261/41.500, 123/332, 123/198DB, 123/DIG.011