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发明名称
FREQUENZMULTIPLEXSYSTEM ZUR UEBERTRAGUNG VON FERNSPRECH UND VIDEOPHONKANAELEN
摘要
申请公布号
DE2004011(B2)
申请公布日期
1971.11.25
申请号
DE19702004011
申请日期
1970.01.29
申请人
发明人
分类号
H04J1/04;H04N7/14;(IPC1-7):H04J1/04
主分类号
H04J1/04
代理机构
代理人
主权项
地址
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