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公开(公告)号:US2550569A
公开(公告)日:1951-04-24
申请号:US76994447
申请日:1947-08-21
Applicant: ASEA AB
Inventor: UNO LAMM , MARIUS BOCKMAN
IPC: H02P27/02
CPC classification number: H02P27/02
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公开(公告)号:US2878428A
公开(公告)日:1959-03-17
申请号:US44999954
申请日:1954-08-16
Applicant: ASEA AB
Inventor: MARIUS BOCKMAN , BENGT GRUNDMARK
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