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EXTRUSION DEVICE
US 3,530,552 A
Filed
: 04/29/1968
Issued
: 09/29/1970
Est. Priority Date
: 04/29/1968
Status: Expired due to Term
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Current Assignee
Glen H. Calder
Original Assignee
Glen H. Calder
Inventors
Calder, Glen H.
Application Number
US04/725,005
Time in Patent Office
883 Days
Field of Search
US Class Current
425/62
CPC Class Codes
B28B 21/52
by extruding
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