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公开(公告)号:US2294099A
公开(公告)日:1942-08-25
申请号:US23296338
申请日:1938-10-03
Applicant: ASEA AB
Inventor: AKE TRAPP CARL
IPC: H02H7/16
CPC classification number: H02H7/16
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公开(公告)号:US2347976A
公开(公告)日:1944-05-02
申请号:US37903241
申请日:1941-02-15
Applicant: ASEA AB
Inventor: AKE TRAPP CARL , BROR HANSSON
IPC: H01G2/14
CPC classification number: H01G2/14
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