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发明名称
CIRCUITO PARA UN SISTEMA DE CONMUTACION TELEFONICA.
摘要
申请公布号
ES373468(A1)
申请公布日期
1972.01.16
申请号
ES19680003734
申请日期
1969.11.04
申请人
WESTERN ELECTRIC CO. IN.
发明人
分类号
H04Q3/00;(IPC1-7):04M/
主分类号
H04Q3/00
代理机构
代理人
主权项
地址
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