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公开(公告)号：US2836074A
公开(公告)日：1958-05-27
申请号：US38019453
申请日：1953-09-15
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： WALTER SCHAELCHLIN , GARY CLARENCE E
CPC classification number: G05G15/00 , D21G9/0009 , Y10T74/1956
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