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Rotary valves
US 2,916,254 A
Filed
: 12/13/1954
Issued
: 12/08/1959
Est. Priority Date
: 12/13/1954
Status: Expired due to Term
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Current Assignee
Evert J. Wendell
Original Assignee
Evert J. Wendell
Inventors
Wendell, Evert J.
Application Number
US03/474,781
Time in Patent Office
1,821 Days
Field of Search
US Class Current
251/172
CPC Class Codes
F16K 5/0636
the spherical plug being in...
F16K 5/0673
Composite packings
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