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Expanding mandrel and method of making same
US 2,776,839 A
Filed
: 10/20/1955
Issued
: 01/08/1957
Est. Priority Date
: 10/20/1955
Status: Expired due to Term
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Current Assignee
Franklyn E. Winnen
,
Milton L. Benjamin
Original Assignee
Franklyn E. Winnen
,
Milton L. Benjamin
Inventors
Benjamin, Milton L.
,
Winnen, Franklyn E.
Application Number
US03/541,668
Time in Patent Office
446 Days
Field of Search
US Class Current
279/2.04
CPC Class Codes
B23B 31/40
Expansion mandrels
Y10T 279/1012
Fixed cam and moving jaws
Y10T 279/17529
Fixed cam and moving jaws
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