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公开(公告)号：US2459084A
公开(公告)日：1949-01-11
申请号：US35050240
申请日：1940-08-03
Applicant: BUDD CO
Inventor： MCGARY FRANK E , EDWARD HOCHREITER , SCHLECHT CHARLES F , FRANK SHANNON
IPC: B21D37/20
CPC classification number: B21D37/20 , Y10S425/029
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