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公开(公告)号：US2853675A
公开(公告)日：1958-09-23
申请号：US55614455
申请日：1955-12-29
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： ESTRADA JR HERBERT , HAMMOND JOHN G , WARD JOHN P
IPC: G05B11/01
CPC classification number: G05B11/016
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