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VALVE MANIFOLD
US 3,450,157 A
Filed
: 07/31/1967
Issued
: 06/17/1969
Est. Priority Date
: 07/31/1967
Status: Expired due to Term
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Current Assignee
John E. Hewson
Original Assignee
John E. Hewson
Inventors
Hewson, John E.
Application Number
US04/657,346
Time in Patent Office
687 Days
Field of Search
US Class Current
137/595
CPC Class Codes
F15B 13/00
Details of servomotor syste...
F16K 11/16
which only slides, or only ...
Y10T 137/87161
With common valve operator
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