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公开(公告)号:US3365613A
公开(公告)日:1968-01-23
申请号:US43275765
申请日:1965-02-15
Applicant: ASEA AB
Inventor: BERTIL HAMMARLUND
IPC: H02M1/04 , H02M7/15
CPC classification number: H02M7/15 , H02M1/045