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公开(公告)号：CH502646A
公开(公告)日：1971-01-31
申请号：CH1889669
申请日：1969-12-19
Applicant: IBM
Inventor： DENNIS PATON ATTWOOD , MCCULLOCH SYME DAVID , HAROLD WILLIAM TUFFILL
IPC: G06F9/22 , G06F9/30 , G06F11/22 , G06F11/267 , G06F11/04
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