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发明名称
Telephone network
摘要
申请公布号
GB9514029(D0)
申请公布日期
1995.09.06
申请号
GB19950014029
申请日期
1995.07.10
申请人
HONG KONG TELECOMMUNICATIONS LIMITED
发明人
分类号
H04M3/428;H04N1/327
主分类号
H04M3/428
代理机构
代理人
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