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发明名称
SISTEMA BIFILARE IN DUPLEX TOTALE PER LA TRASMISSIONE DI DATI
摘要
申请公布号
IT1043321(B)
申请公布日期
1980.02.20
申请号
IT19750028225
申请日期
1975.10.13
申请人
NORTHERN ELECTRIC CO LTD
发明人
分类号
H04L5/14;H03M5/12;H04L25/49;H04M9/00;H04Q3/58;(IPC1-7):H04L/
主分类号
H04L5/14
代理机构
代理人
主权项
地址
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