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发明名称
Elektrische Überwachung für Weichen- und Signalstellwerke.
摘要
申请公布号
AT118316(B)
申请公布日期
1930.07.10
申请号
ATD118316
申请日期
1929.08.06
申请人
ORENSTEIN & KOPPEL AKTIENGESELLSCHAFT
发明人
分类号
主分类号
代理机构
代理人
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