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发明名称
Echo canceler-suppressor speakerphone
摘要
申请公布号
US5016271(A)
申请公布日期
1991.05.14
申请号
US19890358030
申请日期
1989.05.30
申请人
AT&T BELL LABORATORIES
发明人
FORD, WILLIAM A.
分类号
H04B3/20;H04M9/08
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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