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公开(公告)号：US3517387A
公开(公告)日：1970-06-23
申请号：US3517387D
申请日：1966-05-09
Applicant: IBM
Inventor： ANDREWS DOUGLAS R , ATRUBIN ALLAN J , BAUMGARTNER RICHARD J , BOND MILTON F , HU KUANG-CHI
CPC classification number: G06K9/34 , G06K2209/01
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