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1.发明授权
公开(公告)号：US2541062A
公开(公告)日：1951-02-13
申请号：US71859546
申请日：1946-12-26
Applicant: ALUMINUM CO OF AMERICA
Inventor： HOXENG RAYMOND B
IPC: C23F13/14
CPC classification number: C23F13/14
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