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US 3,076,671 A
Filed
: 02/01/1960
Issued
: 02/05/1963
Est. Priority Date
: 02/05/1959
Status: Expired due to Term
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Current Assignee
George Freeman Frank
Original Assignee
George Freeman Frank
Inventors
GEORGE FREEMAN FRANK
Application Number
US04/005,854
Time in Patent Office
1,100 Days
Field of Search
US Class Current
285/277
CPC Class Codes
F16L 37/23
by means of balls
F16L 37/32
at least one of two lift va...
Y10T 137/87957
Valves actuate each other
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