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公开(公告)号：US2301894A
公开(公告)日：1942-11-10
申请号：US26750039
申请日：1939-04-12
Applicant: ERICSSON TELEFON AB L M
Inventor： HERMAN LINDEROTH MARTIN , AXEL LUNDKVIST KARL
IPC: H01H51/04
CPC classification number: H01H51/04
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