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公开(公告)号：US3131293A
公开(公告)日：1964-04-28
申请号：US4289260
申请日：1960-07-14
Applicant: IBM
Inventor： BUSH GRANT H , CARRINGTON JAMES E
CPC classification number: G06F7/4912 , G06F7/4991 , G06F2207/4911 , G06F2207/4914
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