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391143
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Information
Patent Grant
391143
References
Source
Patent Number
391,143
Date Filed
Not available
Date Issued
Tuesday, October 16, 1888
135 years ago
CPC
E03C1/288 - having non-return valves against return of waste water
Y10T137/4501 - Ball valve
Y10T137/791 - Ball valves
Y10T137/8359 - Inspection means
US Classifications
137 - Fluid handling
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