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Valve mechanisms for magnetic fluid conduits and devices employing the same
US 2,820,471 A
Filed
: 07/31/1953
Issued
: 01/21/1958
Est. Priority Date
: 07/31/1953
Status: Expired due to Term
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Current Assignee
Serge L. Crowell
Original Assignee
Serge L. Crowell
Inventors
Crowell, Serge L.
Application Number
US03/371,702
Time in Patent Office
1,635 Days
Field of Search
US Class Current
137/251.1
CPC Class Codes
F16K 31/02
electric F16K31/004 takes p...
Y10S 137/909
Magnetic fluid valve
Y10S 74/04
Magnetic gearing
Y10T 137/4643
Liquid valves
Y10T 74/18088
Rack and pinion type
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