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经营范围
发明名称
ECHO CANCELLER
摘要
申请公布号
IE882478(L)
申请公布日期
1989.02.14
申请号
IE19880002478
申请日期
1988.08.12
申请人
GEC PLESSEY TELECOMMUNCATIONS LIMITED
发明人
分类号
H04B3/00;(IPC1-7):H04B3/00
主分类号
H04B3/00
代理机构
代理人
主权项
地址
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