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公开(公告)号：US2953740A
公开(公告)日：1960-09-20
申请号：US64903157
申请日：1957-03-28
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： ANDRESS KERNICK , EAST LIBERTY , PERKINS JR HARLEY A
IPC: G05B11/01
CPC classification number: G05B11/016
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