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发明名称
Hydraulic actuated borehole drilling apparatus
摘要
申请公布号
GB929818(A)
申请公布日期
1963.06.26
申请号
GB19610028384
申请日期
1961.08.04
申请人
JERSEY PRODUCTION RESEARCH COMPANY
发明人
分类号
E21B44/00
主分类号
E21B44/00
代理机构
代理人
主权项
地址
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