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公开(公告)号：US3144568A
公开(公告)日：1964-08-11
申请号：US8957161
申请日：1961-02-15
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： SILLIMAN SHELDON D , GRISCOM DAVID L
IPC: H01H47/18 , H03K17/28 , H03K17/292
CPC classification number: H03K17/28 , H01H47/18 , H03K17/292 , Y10T307/878
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