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经营范围
发明名称
SWITCHING SYSTEM
摘要
申请公布号
GB8608740(D0)
申请公布日期
1986.05.14
申请号
GB19860008740
申请日期
1986.04.10
申请人
BRITISH TELECOMMUNICATIONS PLC
发明人
分类号
H04Q3/68
主分类号
H04Q3/68
代理机构
代理人
主权项
地址
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