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经营范围
发明名称
Mining method
摘要
申请公布号
US4796531(A)
申请公布日期
1989.01.10
申请号
US19870069210
申请日期
1987.07.01
申请人
GERNAL MINING UNION CORPORATION LIMITED
发明人
SMITHIES, STAFFORD A.;ATKINS, RAYMOND C.
分类号
F42D1/055;(IPC1-7):F42B3/10
主分类号
F42D1/055
代理机构
代理人
主权项
地址
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