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公开(公告)号：US3019354A
公开(公告)日：1962-01-30
申请号：US81697259
申请日：1959-05-29
Applicant: IBM
Inventor： ANDERSON JOHN L , HAND FRANCIS R
IPC: G11C19/32
CPC classification number: G11C19/32 , Y10S505/869
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