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公开(公告)号：US2519291A
公开(公告)日：1950-08-15
申请号：US74880847
申请日：1947-05-17
Applicant: WESTINGHOUSE ELECTRIC CORP
Inventor： JEROME SANDIN , RAWLINS HERBERT L
IPC: H01H71/44
CPC classification number: H01H71/443
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