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2132215
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Information
Patent Grant
2132215
References
Source
Patent Number
2,132,215
Date Filed
Not available
Date Issued
Tuesday, October 4, 1938
86 years ago
CPC
G05D7/0193 - using hydraulic or pneumatic amplifiers, relays or transmitters
G05D16/10 - the sensing element being a piston or plunger
Y10T137/7782 - With manual or external control for line valve
Y10T137/7806 - Modified valve casing
Y10T137/86807 - Sequential opening or closing of serial ports in single flow line
US Classifications
137 - Fluid handling
092 - Expansible chamber devices
251 - Valves and valve actuation
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