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发明名称
Kohlengewinnungsmaschine mit einem keilfoermigen Schneidkopf
摘要
申请公布号
DE850436(C)
申请公布日期
1952.09.25
申请号
DE1946P026002D
申请日期
1946.12.22
申请人
MAVOR & COULSON LIMITED
发明人
SPROUL JOHN CONNEL
分类号
E21C27/32
主分类号
E21C27/32
代理机构
代理人
主权项
地址
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