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公开(公告)号：US2769880A
公开(公告)日：1956-11-06
申请号：US51550255
申请日：1955-06-14
Applicant: ERICSSON TELEFON AB L M
Inventor： OLOF HOLMQVIST GERT ERIK , ERIK BJORKLUND BENGT , KURT DIETSCH ARNE
IPC: H01H67/26
CPC classification number: H01H67/26
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