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发明名称
METHOD AND DEVICE FOR REMOVING ECHO
摘要
申请公布号
JPH01212130(A)
申请公布日期
1989.08.25
申请号
JP19880036869
申请日期
1988.02.19
申请人
NEC CORP
发明人
UMAME FUMIE
分类号
H04B3/23
主分类号
H04B3/23
代理机构
代理人
主权项
地址
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