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发明名称
摘要
申请公布号
LU75776(A1)
申请公布日期
1977.04.28
申请号
LU19760075776
申请日期
1976.09.10
申请人
发明人
分类号
H04J3/14;(IPC1-7):H04B/;H04J/
主分类号
H04J3/14
代理机构
代理人
主权项
地址
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