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公开(公告)号：US3280334A
公开(公告)日：1966-10-18
申请号：US53459766
申请日：1966-02-03
Applicant: ASEA AB
Inventor： ERICH UHLMANN , IWAN HEDLUND
CPC classification number: H02J3/36 , H02M5/20 , H02M5/447 , Y02E60/60 , Y10T307/713 , Y10T307/724 , Y10T307/729
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