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1.Direction determination for curve followers including ring for providing digital signals 失效
Title translation: 曲线追随者的方向确定,包括用于提供数字信号的环-
公开(公告)号:US2959769A
公开(公告)日:1960-11-08
申请号:US78352858
申请日:1958-12-29
Applicant: IBM
Inventor: GREANIAS EVON C , ARTHUR HAMBURGEN , LEIMER JOHN J
IPC: G06K9/38
CPC classification number: G06K9/38 , G06K2209/01
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