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Method of making metal forming dies
US 3,343,430 A
Filed
: 12/15/1965
Issued
: 09/26/1967
Est. Priority Date
: 12/15/1965
Status: Expired due to Term
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Current Assignee
Charles H. Haas
,
Michael Mattia
Original Assignee
Charles H. Haas
,
Michael Mattia
Inventors
Haas, Charles H.
,
Mattia, Michael
Application Number
US04/514,093
Time in Patent Office
650 Days
Field of Search
US Class Current
76/107.1
CPC Class Codes
B21D 37/20
Making tools by operations ...
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