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Plastic tubing process
US 2,972,779 A
Filed
: 11/14/1958
Issued
: 02/28/1961
Est. Priority Date
: 06/07/1954
Status: Expired due to Term
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Current Assignee
Calvin C. Cowley
Original Assignee
Calvin C. Cowley
Inventors
Cowley, Calvin C.
Application Number
US03/773,998
Time in Patent Office
837 Days
Field of Search
US Class Current
216/53
CPC Class Codes
A61M 25/0015
Making lateral openings in ...
B26F 1/0015
specially adapted for perfo...
B29C 37/02
Deburring or deflashing the...
Y10S 451/913
Contour abrading
Y10T 83/0419
By distorting within elasti...
Y10T 83/0596
Cutting wall of hollow work
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