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发明名称
UN DISPOSITIVO DE CONDUCTIBILIDAD ASIMÉTRICA
摘要
申请公布号
ES197730(A1)
申请公布日期
1951.09.01
申请号
ES19300001977
申请日期
1951.05.05
申请人
COMPAGNIE DES FREINS ET SIGNAUX WESTINGHOUSE
发明人
分类号
(IPC1-7):H01
主分类号
(IPC1-7):H01
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代理人
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地址
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