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公开(公告)号：US2711490A
公开(公告)日：1955-06-21
申请号：US33898253
申请日：1953-02-26
Applicant: ASEA AB
Inventor： SVEN GYNT , AKE LINDSTEDT
IPC: H02K3/52
CPC classification number: H02K3/527
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