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公开(公告)号：US2416378A
公开(公告)日：1947-02-25
申请号：US56674844
申请日：1944-12-05
Applicant: ALUMINUM CO OF AMERICA
Inventor： CHANDLER EDWARD M , BOSSERT THEODORE W , BAKER KENNETH B
IPC: C22F1/04
CPC classification number: C22F1/04
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