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公开(公告)号：US3196192A
公开(公告)日：1965-07-20
申请号：US18343662
申请日：1962-03-29
Applicant: ALUMINUM CO OF AMERICA
Inventor： VRUGGINK JOHN E , FRANTZ GEORGE H
IPC: B22F9/10
CPC classification number: B22F9/10
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