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发明名称
Improvements relating to coal mining power loaders for longwall faces
摘要
申请公布号
GB639879(A)
申请公布日期
1950.07.05
申请号
GB19470030034
申请日期
1947.11.11
申请人
SIEMENS-SCHUCKERT (GREAT BRITAIN) LIMITED;BENJAMIN JOHN DIXON
发明人
分类号
E21C27/12
主分类号
E21C27/12
代理机构
代理人
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地址
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