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公开(公告)号：US2049938A
公开(公告)日：1936-08-04
申请号：US74188834
申请日：1934-08-29
Applicant: WESTERN ELECTRIC CO
Inventor： ANDERSON HARVEY A , RANDALL GILLIS , KAGI WALTER W , PRENDERGAST CLARENCE T
IPC: B21C29/00
CPC classification number: B21C29/00
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公开(公告)号：US2189064A
公开(公告)日：1940-02-06
申请号：US75246634
申请日：1934-11-10
Applicant: WESTERN ELECTRIC CO
Inventor： RANDALL GILLIS , PRENDERGAST CLARENCE T
IPC: C22C11/02
CPC classification number: C22C11/02
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