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公开(公告)号:JPS53136405A
公开(公告)日:1978-11-29
申请号:JP4675978
申请日:1978-04-21
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor: FURANSESUKO GANDEINII , GIUSETSUPE GIANDONATO , ENRIKO INPAROMENI , ROBERUTO MONTAGUNA
IPC: H04M11/06 , H04L27/00 , H04L27/18 , H04M11/00