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Ventilated conduit coupling
US 2,675,253 A
Filed
: 10/18/1952
Issued
: 04/13/1954
Est. Priority Date
: 10/18/1952
Status: Expired due to Term
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Current Assignee
Bertil Stade
Original Assignee
Bertil Stade
Inventors
BERTIL STADE
Application Number
US03/315,444
Time in Patent Office
542 Days
Field of Search
US Class Current
285/408
CPC Class Codes
F16L 23/10
with a pivoting or swinging...
Y10T 292/214
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