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发明名称
MEJORAS EN O RELATIVAS A SISTEMAS DE SENALIZACIoN POR IMPULSOS
摘要
申请公布号
ES175446(A1)
申请公布日期
1946.12.01
申请号
ES19460001754
申请日期
1946.10.24
申请人
STANDARD ELECTRICA, S.A.
发明人
分类号
(IPC1-7):H03;G08
主分类号
(IPC1-7):H03
代理机构
代理人
主权项
地址
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