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Gate valve
US 2,825,526 A
Filed
: 01/02/1957
Issued
: 03/04/1958
Est. Priority Date
: 01/02/1957
Status: Expired due to Term
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Current Assignee
Otus E. Zuiderhoek
Original Assignee
Otus E. Zuiderhoek
Inventors
Zuiderhoek, Otus E.
Application Number
US03/632,223
Time in Patent Office
426 Days
Field of Search
US Class Current
251/44
CPC Class Codes
F16K 31/38
in which the fluid works di...
F16K 31/383
the fluid acting on a piston
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