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公开(公告)号：US3438021A
公开(公告)日：1969-04-08
申请号：US3438021D
申请日：1965-07-26
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： NELKIN ARTHUR , DURGIN CHARLES B , GEIL FRED G , THOMPSON JOHN H
CPC classification number: G08B13/20
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公开(公告)号：US3311760A
公开(公告)日：1967-03-28
申请号：US32536063
申请日：1963-11-21
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： DURGIN CHARLES B , THOMPSON JOHN H , WHITTAKER ROBERT H
IPC: H03H9/17
CPC classification number: H03H9/17
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