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TUBE CLOSURE BALL VALVE
US 3,489,158 A
Filed
: 11/16/1966
Issued
: 01/13/1970
Est. Priority Date
: 11/16/1966
Status: Expired due to Term
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Current Assignee
Irvine John Laurance
,
Mackay Ian Norton
Original Assignee
Irvine John Laurance
,
Mackay Ian Norton
Inventors
MACKAY IAN NORTON
,
IRVINE JOHN LAURANCE
Application Number
US04/594,879
Time in Patent Office
1,154 Days
Field of Search
US Class Current
137/1
CPC Class Codes
F16K 5/0615
the angle the spindle makes...
G21C 13/067
for tubes, e.g. standpipes;...
Y02E 30/30
Nuclear fission reactors
Y10T 137/0318
Processes
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