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发明名称
INSTALACION DE LLAMADA CONSISTENTE EN LUGARES DE COMUNICA- CION, RED DE CONDUCTORES Y CENTRAL PARA LA TRANSMISION DE NOTICIAS.
摘要
申请公布号
ES442945(A3)
申请公布日期
1977.04.16
申请号
ES19450004429
申请日期
1975.11.25
申请人
SCHMELTER & CLAAS, G. M. B. H. & CO.
发明人
分类号
H04J;(IPC1-7):04J/
主分类号
H04J
代理机构
代理人
主权项
地址
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