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发明名称
DIGITAL COMMUNICATION SYSTEMS WITH AT LEAST ONE FOUR-WIRE SECTION
摘要
申请公布号
YU127880(A)
申请公布日期
1982.10.31
申请号
YU19800001278
申请日期
1980.05.14
申请人
SIEMENS AG
发明人
STREHL H.
分类号
H04B3/10;H04B3/20;H04B3/23;H04L25/04;(IPC1-7):H04L25/04
主分类号
H04B3/10
代理机构
代理人
主权项
地址
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