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发明名称
Loudspeaking telephone systems
摘要
申请公布号
GB2317535(A)
申请公布日期
1998.03.25
申请号
GB19980000665
申请日期
1996.07.09
申请人
* HONG KONG TELECOMMUNICATIONS LIMITED
发明人
DAVID * CONNOLLY
分类号
H04M3/56;H04M9/08;(IPC1-7):H04M9/08
主分类号
H04M3/56
代理机构
代理人
主权项
地址
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