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公开(公告)号：US3499166A
公开(公告)日：1970-03-03
申请号：US44542465
申请日：1965-04-05
Applicant: ASEA AB
Inventor： ENGSTROM GUNNAR , STACKEGARD HANS
CPC classification number: H02J3/36 , Y02E60/60 , Y10T307/352 , Y10T307/707 , Y10T307/729
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