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公开(公告)号：JPS57119529A
公开(公告)日：1982-07-26
申请号：JP19298881
申请日：1981-12-02
Applicant: Cselt Centro Studi Lab Telecom
Inventor： JIYAN BATEISUTA ARAARIA , ROBERUTO PUREETEI
CPC classification number: H04B7/212
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