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2882533
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Information
Patent Grant
2882533
References
Source
Patent Number
2,882,533
Date Filed
Not available
Date Issued
Tuesday, April 21, 1959
65 years ago
CPC
E03D1/302 - with valves kept in open position by means of air or water pressure or by vacuum
F16K21/18 - closed when a rising liquid reaches a predetermined level
US Classifications
004 - Baths, closets, sinks, and spittoons
181 - Acoustics
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