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公开(公告)号:US2640963A
公开(公告)日:1953-06-02
申请号:US9897449
申请日:1949-06-14
Applicant: ASEA AB
Inventor: SORENSEN HARALD M , HARRY FORSSELL
IPC: H01F29/14
CPC classification number: H01F29/14 , Y10T307/258
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公开(公告)号:US2599137A
公开(公告)日:1952-06-03
申请号:US8864949
申请日:1949-04-20
Applicant: ASEA AB
Inventor: SORENSEN HARALD M
IPC: H03F9/02
CPC classification number: H03F9/02
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3.
公开(公告)号:US2518953A
公开(公告)日:1950-08-15
申请号:US4915448
申请日:1948-09-14
Applicant: ASEA AB
Inventor: SORENSEN HARALD M , BJORN STEPHENSEN
CPC classification number: H05B39/09 , H01F38/04 , Y10T307/74
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