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发明名称
Longwall mining method and apparatus
摘要
申请公布号
GB1085950(A)
申请公布日期
1967.10.04
申请号
GB19630051086
申请日期
1963.12.27
申请人
MAVOR & COULSON LIMITED
发明人
LOW ALEXANDER CHARLES
分类号
E21C27/02
主分类号
E21C27/02
代理机构
代理人
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地址
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