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发明名称
SEILZUGFUEHRUNG ZUR SIGNALGEBUNG IN ABBAUBETRIEBEN.
摘要
申请公布号
DE1764622(U)
申请公布日期
1958.04.10
申请号
DE195800N8381U
申请日期
1958.02.26
申请人
DR. EWALD NELKEN
发明人
DR. EWALD NELKEN
分类号
主分类号
代理机构
代理人
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