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经营范围
发明名称
DIGITAL ZERO OF CIRCUIT
摘要
申请公布号
GB8508714(D0)
申请公布日期
1985.05.09
申请号
GB19850008714
申请日期
1985.04.03
申请人
STANDARD TELEPHONES & CABLES PLC
发明人
分类号
H03D7/00;G01S7/292;G01S13/50;H03B27/00;H03D3/00;H04L27/00
主分类号
H03D7/00
代理机构
代理人
主权项
地址
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