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US 2,739,612 A
Filed
: 03/07/1955
Issued
: 03/27/1956
Est. Priority Date
: 03/07/1955
Status: Expired due to Term
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Current Assignee
Howard J. Hansen
Original Assignee
Howard J. Hansen
Inventors
Hansen, Howard J.
Application Number
US03/492,637
Time in Patent Office
386 Days
Field of Search
US Class Current
137/614.05
CPC Class Codes
F16K 31/50
with screw-spindle or inter...
F16L 37/23
by means of balls
F16L 37/30
with fluid cut-off means in...
F25B 2345/006
characterised by charging o...
F25B 45/00
Arrangements for charging o...
Y10T 137/87965
Valve- or closure-operated ...
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