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经营范围
发明名称
Dispositif de forage
摘要
申请公布号
FR1438288(A)
申请公布日期
1966.05.13
申请号
FR19650004142
申请日期
1965.02.02
申请人
GARDNER-DENVER COMPANY
发明人
分类号
E21B17/07
主分类号
E21B17/07
代理机构
代理人
主权项
地址
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