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发明名称
MEJORAS EN SISTEMAS TELEFoNICOS AUTOMáTICOS
摘要
申请公布号
ES227032(A1)
申请公布日期
1956.04.16
申请号
ES19320002270
申请日期
1956.03.01
申请人
STANDARD ELECTRICA, S.A.
发明人
分类号
(IPC1-7):H04
主分类号
(IPC1-7):H04
代理机构
代理人
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地址
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