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发明名称
SPRECHGESCHUETZTER FREQUENZSELEKTIVER ZEICHENEMPFAENGER
摘要
申请公布号
DE2712831(A1)
申请公布日期
1978.10.05
申请号
DE19772712831
申请日期
1977.03.23
申请人
SIEMENS AG
发明人
AST,REINHOLD
分类号
H04M1/68;H04K1/00;H04L27/26;H04Q1/457;(IPC1-7):H04Q1/46
主分类号
H04M1/68
代理机构
代理人
主权项
地址
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