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公开(公告)号：US3381089A
公开(公告)日：1968-04-30
申请号：US40082864
申请日：1964-10-01
Applicant: IBM
Inventor： DELANOY RICHARD L , FOREMAN DONALD F , LAURER GEORGE J
IPC: H04L25/08
CPC classification number: H04L25/08
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