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公开(公告)号:US3199801A
公开(公告)日:1965-08-10
申请号:US29452663
申请日:1963-07-12
Applicant: AMPEX
Inventor: SVENDSEN GORDON D
IPC: G11B15/43 , G11B15/48 , H02P3/04
CPC classification number: G11B15/43 , G11B15/48 , H02P3/04