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发明名称
MULTIFREQUENCY SIGNALLING DECODER
摘要
申请公布号
GB1521414(A)
申请公布日期
1978.08.16
申请号
GB19760011098
申请日期
1976.03.19
申请人
AMERICAN TELECOMMUNICATIONS CORP
发明人
分类号
H04L27/26;H04Q1/457;(IPC1-7):H04Q1/44
主分类号
H04L27/26
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代理人
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