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公开(公告)号：US3084080A
公开(公告)日：1963-04-02
申请号：US74907858
申请日：1958-07-17
Applicant: ALUMINUM CO OF AMERICA
Inventor： SCOTT HUNTER MATTHEW , FRANZ EDMUND C
IPC: C22F1/04
CPC classification number: C22F1/04
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