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公开(公告)号：US2420889A
公开(公告)日：1947-05-20
申请号：US58690945
申请日：1945-04-06
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： LEEDS WINTHROP M
IPC: H01H33/96
CPC classification number: H01H33/96
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公开(公告)号：US2416185A
公开(公告)日：1947-02-18
申请号：US57082045
申请日：1945-01-01
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： LEEDS WINTHROP M
IPC: H01H33/98
CPC classification number: H01H33/98
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