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公开(公告)号：US3470404A
公开(公告)日：1969-09-30
申请号：US3470404D
申请日：1966-06-30
Applicant: ASEA AB
Inventor： AGERMAN ERIK , NILSSON NILS-ERIK
CPC classification number: H02K1/30 , B60C11/0323 , B60C11/1218 , Y10T29/49012
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