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发明名称
Setting av foringer med kveilet rör
摘要
申请公布号
NO970269(A)
申请公布日期
1997.07.23
申请号
NO19970000269
申请日期
1997.01.21
申请人
BAKER HUGHES INC
发明人
CORONADO, MARTIN P.
分类号
E21B23/06;E21B33/127;E21B33/14;E21B43/10;(IPC1-7):E21B33/12
主分类号
E21B23/06
代理机构
代理人
主权项
地址
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