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公开(公告)号:US2796334A
公开(公告)日:1957-06-18
申请号:US49013055
申请日:1955-02-23
Applicant: ALUMINUM CO OF AMERICA
Inventor: ROBINSON DONALD L
IPC: C23F1/20
CPC classification number: C23F1/20
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公开(公告)号:US2796335A
公开(公告)日:1957-06-18
申请号:US50120655
申请日:1955-04-13
Applicant: ALUMINUM CO OF AMERICA
Inventor: ROBINSON DONALD L
IPC: C23F1/20
CPC classification number: C23F1/20
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