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公开(公告)号：US3358220A
公开(公告)日：1967-12-12
申请号：US45077565
申请日：1965-04-26
Applicant: ASEA AB
Inventor： NILS FAHLEN , VJEKOSLAV MADZAREVIC
IPC: H01G4/38
CPC classification number: H01G4/38
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