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452818
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Information
Patent Grant
452818
References
Source
Patent Number
452,818
Date Filed
Not available
Date Issued
Tuesday, May 26, 1891
133 years ago
CPC
E03C1/295 - using air-supply valves
Y10T137/3258 - Automatic valve in vent line
Y10T137/792 - Guide and closure integral unit
Y10T137/86292 - System with plural openings, one a gas vent or access opening
US Classifications
137 - Fluid handling
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