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发明名称
Système transmetteur de signaux sur les lignes à constante de temps élevee
摘要
申请公布号
FR1046574(A)
申请公布日期
1953.12.08
申请号
FRD1046574
申请日期
1951.03.22
申请人
发明人
SOURGENS ROGER
分类号
H04L25/49
主分类号
H04L25/49
代理机构
代理人
主权项
地址
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