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公开(公告)号：US3404230A
公开(公告)日：1968-10-01
申请号：US38486364
申请日：1964-07-24
Applicant: IBM
Inventor： HAILEY ROBERT R , LAURER GEORGE J , SIMPSON ROBERT J
IPC: H04L7/033
CPC classification number: H04L7/0331
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