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发明名称
Drilling procedure and apparatus
摘要
申请公布号
US2595107(A)
申请公布日期
1952.04.29
申请号
US19480015845
申请日期
1948.03.19
申请人
STANDARD OIL DEVELOPMENT COMPANY
发明人
SEWELL BEN W.
分类号
E21B11/06
主分类号
E21B11/06
代理机构
代理人
主权项
地址
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