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发明名称
TELECOMMUNICATIONS SYSTEM AND METHOD
摘要
申请公布号
GB9126505(D0)
申请公布日期
1992.02.12
申请号
GB19910026505
申请日期
1991.12.13
申请人
GPT LIMITED
发明人
分类号
H04L7/08;H04J3/06;H04L7/04;H04L29/08
主分类号
H04L7/08
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代理人
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