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发明名称
Anlage zum Abbau von Kohle od. dgl. unter Verwendung eines schaelenden Gewinnungsgeraetes
摘要
申请公布号
DE919521(C)
申请公布日期
1954.10.25
申请号
DE1945P003525D
申请日期
1945.04.19
申请人
PREUSSISCHE BERGWERKS- UND HUETTEN-AKTIENGESELLSCHAFT
发明人
GREBE KONRAD
分类号
E21C27/34
主分类号
E21C27/34
代理机构
代理人
主权项
地址
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