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公开(公告)号：US2352990A
公开(公告)日：1944-07-04
申请号：US48951743
申请日：1943-06-03
Applicant: ALUMINUM CO OF AMERICA
Inventor： THOMAS WOOD ROBERT
IPC: B22D21/00
CPC classification number: B22D21/007
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公开(公告)号：US2389583A
公开(公告)日：1945-11-20
申请号：US56856144
申请日：1944-12-16
Applicant: ALUMINUM CO OF AMERICA
Inventor： THOMAS WOOD ROBERT , GANTZ MARVIN E
IPC: C22F1/06
CPC classification number: C22F1/06
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