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1.发明授权System and method for identifying a set of graphic characters grouped together on a visible information display 失效用于识别一组可视信息显示分组的图形字符的系统和方法
公开(公告)号：US3550084A
公开(公告)日：1970-12-22
申请号：US3550084D
申请日：1966-06-27
Applicant: GEN ELECTRIC
Inventor： BIGELOW JOHN E , LEMMOND CHARLES O
CPC classification number: G06K9/74 , G02B27/46 , G03H2001/0066 , G06K9/20 , G06K9/2009 , G06K9/32
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