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Flexible diaphragm flow control valve
US 2,877,791 A
Filed
: 08/15/1955
Issued
: 03/17/1959
Est. Priority Date
: 08/15/1955
Status: Expired due to Term
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Current Assignee
Herbert G. Rich
Original Assignee
Herbert G. Rich
Inventors
Rich, Herbert G.
Application Number
US03/528,306
Time in Patent Office
1,310 Days
Field of Search
US Class Current
137/487
CPC Class Codes
F16K 31/36
in which fluid from the cir...
F16K 7/17
the diaphragm being actuate...
Y10T 137/3056
Weight or pressure
Y10T 137/776
Control by pressures across...
Y10T 137/7762
Fluid pressure type
Y10T 137/7768
Pilot controls supply to pr...
Y10T 137/7769
Single acting fluid servo
Y10T 137/86759
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