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公开(公告)号:JPS5658345A
公开(公告)日:1981-05-21
申请号:JP13174180
申请日:1980-09-24
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor: PIERO BERUFUORUTE , RENZO BORUCHINON
IPC: H04L5/14
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公开(公告)号:JPS56132039A
公开(公告)日:1981-10-16
申请号:JP1632881
申请日:1981-02-07
Applicant: CSELT CENTRO STUDI LAB TELECOM
Inventor: PIERO BERUFUORUTE , RENZO BORUCHINON
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