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Automatic gas cutoff valve
US 2,699,177 A
Filed
: 02/19/1952
Issued
: 01/11/1955
Est. Priority Date
: 02/19/1952
Status: Expired due to Term
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Current Assignee
Isaac S. Wingfield
Original Assignee
Isaac S. Wingfield
Inventors
Wingfield, Isaac S.
Application Number
US03/272,355
Time in Patent Office
1,057 Days
Field of Search
US Class Current
137/466
CPC Class Codes
F16K 17/00
Safety valves; Equalising v...
Y10T 137/7733
With fluid pressure seating...
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