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发明名称
Resistive barrier trunk interface circuit
摘要
申请公布号
GB9906226(D0)
申请公布日期
1999.05.12
申请号
GB19990006226
申请日期
1999.03.19
申请人
SILVER TELECOM LIMITED
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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