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发明名称
ECHO CANCELLER WITH HIGH-PASS FILTER
摘要
申请公布号
GB2050127(A)
申请公布日期
1980.12.31
申请号
GB19800014764
申请日期
1980.05.02
申请人
PHILIPS NV
发明人
分类号
H04B3/20;H04B3/23;H04L5/14;(IPC1-7):H04B3/23
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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