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发明名称
ECHO CANCELLER
摘要
申请公布号
JPS6348923(A)
申请公布日期
1988.03.01
申请号
JP19860192071
申请日期
1986.08.19
申请人
HITACHI LTD
发明人
HIROSE KAZUTO
分类号
H04B3/23
主分类号
H04B3/23
代理机构
代理人
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