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公开(公告)号:US3403288A
公开(公告)日:1968-09-24
申请号:US50548365
申请日:1965-10-28
Applicant: IBM
Inventor: BRADLEY MARK E , HINKEIN DONALD J
IPC: G01R13/26 , G09G1/00 , G09G1/10 , H04N5/59
CPC classification number: G01R13/26 , G09G1/002 , G09G1/10 , H04N5/59