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经营范围
发明名称
NOISE CANCELLATION
摘要
申请公布号
EP0192359(B1)
申请公布日期
1989.03.08
申请号
EP19860300563
申请日期
1986.01.28
申请人
BRITISH TELECOMMUNICATIONS PUBLIC LIMITED COMPANY
发明人
COX, SIMON ANDREW
分类号
H04B3/20;H04B3/23;(IPC1-7):H04B3/23
主分类号
H04B3/20
代理机构
代理人
主权项
地址
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