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发明名称
Improvements in or relating to telecommunications exchanges
摘要
申请公布号
GB9620816(D0)
申请公布日期
1996.11.20
申请号
GB19960020816
申请日期
1996.10.05
申请人
ROKE MANOR RESEARCH LIMITED
发明人
分类号
H04L12/28;H04M3/42;H04M9/02;H04Q3/62
主分类号
H04L12/28
代理机构
代理人
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