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发明名称
NOISE CANCELLATION
摘要
申请公布号
IE860234(L)
申请公布日期
1986.07.29
申请号
IE19860000234
申请日期
1986.01.28
申请人
BRITISH TELECOMMUNICATIONS PLC
发明人
分类号
H04B3/20;H04B3/23;(IPC1-7):H04B
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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