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经营范围
发明名称
LINE REPEATER AMPLIFIERS
摘要
申请公布号
GB1525592(A)
申请公布日期
1978.09.20
申请号
GB19750036197
申请日期
1975.09.03
申请人
SIEMENS AG
发明人
分类号
H04B3/36;H04B3/44;(IPC1-7):H03F3/10
主分类号
H04B3/36
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