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公开(公告)号：US3334171A
公开(公告)日：1967-08-01
申请号：US41119764
申请日：1964-11-16
Applicant: ASEA AB
Inventor： BENGT FREDRIKSON , GUSTAV HAAS , GOSTA KARLSSON , MATS RYDINGER
CPC classification number: H05B6/20 , F27B5/04 , H05B2213/02
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