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公开(公告)号：US2381219A
公开(公告)日：1945-08-07
申请号：US46172142
申请日：1942-10-12
Applicant: ALUMINUM CO OF AMERICA
Inventor： LE BARON IRA M
IPC: C22C21/00
CPC classification number: C22C21/006 , C22C21/00
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