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公开(公告)号：US3283372A
公开(公告)日：1966-11-08
申请号：US34806064
申请日：1964-02-28
Applicant: ALUMINUM CO OF AMERICA
Inventor： MOORMAN JOHN H , DICKERT JR WARREN Y
IPC: B22D17/14
CPC classification number: B22D17/14
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