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公开(公告)号：US3202762A
公开(公告)日：1965-08-24
申请号：US16080761
申请日：1961-12-20
Applicant: BELL TELEPHONE LABOR INC
Inventor： AARON MARVIN R , HENNING HANSJUERGEN H
IPC: H04J1/00
CPC classification number: H04J1/00
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