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公开(公告)号:CH534394A
公开(公告)日:1973-02-28
申请号:CH736071
申请日:1971-05-19
Applicant: IBM
Inventor: GERALD EDWARD BARTHOLOMEW , DONALD JAMES KOSTUCH , WILLIAM STANLEY ROHLAND , THOMAS EDWARD ROBINSON
IPC: G06K9/68 , G06K9/10