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公开(公告)号：US2721138A
公开(公告)日：1955-10-18
申请号：US24665451
申请日：1951-09-14
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： BAKER ROBERT F , BYRON EDGAR S
IPC: C22C1/04
CPC classification number: C22C1/045
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