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经营范围
发明名称
Ausbau fuer unterirdische Grubenbetriebe o. dgl.
摘要
申请公布号
DE805391(C)
申请公布日期
1951.05.17
申请号
DE1949S001165
申请日期
1949.12.31
申请人
SPRENGER & CO.
发明人
KEMMING RUDOLF
分类号
E21D11/15
主分类号
E21D11/15
代理机构
代理人
主权项
地址
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