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发明名称
Tandem echo suppressor circuits
摘要
申请公布号
US2990457(A)
申请公布日期
1961.06.27
申请号
US19580713226
申请日期
1958.02.04
申请人
BELL TELEPHONE LABORATORIES, INCORPORATED
发明人
HALL ARTHUR D.;ZAROUNI ALFRED
分类号
H04B3/20
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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