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发明名称
MINING METHOD
摘要
申请公布号
ZW12287(A1)
申请公布日期
1987.09.30
申请号
ZW19870000122
申请日期
1987.07.03
申请人
GENERAL MINING UNION CORPORATION LIMITED
发明人
STAFFORD ALUN SMITHIES;RAYMOND CATHERALL ATKINS
分类号
F42D1/055;(IPC1-7):E21C/
主分类号
F42D1/055
代理机构
代理人
主权项
地址
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