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经营范围
发明名称
LINE FEED CIRCUIT FOR A DIGITAL SIGNAL LOOP
摘要
申请公布号
EP0160411(B1)
申请公布日期
1991.08.28
申请号
EP19850302304
申请日期
1985.04.02
申请人
NORTHERN TELECOM LIMITED
发明人
HINGSTON, JOSEPH WILLIAM;URBACH, STEPHEN THOMAS
分类号
H04M19/00;H04M19/08
主分类号
H04M19/00
代理机构
代理人
主权项
地址
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