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发明名称
UNTERTAGE-LANGLOCHBOHRGERAET.
摘要
申请公布号
AT36029(T)
申请公布日期
1988.08.15
申请号
AT19840308428T
申请日期
1984.12.04
申请人
INCO LIMITED
发明人
ENGLAND, JOHN RICHARD;RIACH, RICHARD LLOYD
分类号
E21B7/02;(IPC1-7):E21B7/02;E21C11/02
主分类号
E21B7/02
代理机构
代理人
主权项
地址
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