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发明名称
ECHO CANCELING METHOD AND ECHO CANCELER
摘要
申请公布号
JPH0786991(A)
申请公布日期
1995.03.31
申请号
JP19930225424
申请日期
1993.09.10
申请人
NEC CORP
发明人
UNNO YOSHIHIRO
分类号
H04B3/23;H03H21/00;(IPC1-7):H04B3/23
主分类号
H04B3/23
代理机构
代理人
主权项
地址
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