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发明名称
Dispositif de contrôle du déroulement de forages
摘要
申请公布号
FR1185911(A)
申请公布日期
1959.08.10
申请号
FRD1185911
申请日期
1957.11.08
申请人
LICENTIA PATENT-VERWALTUNGS-G. M. B. H.
发明人
分类号
E21B4/04
主分类号
E21B4/04
代理机构
代理人
主权项
地址
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