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发明名称
Verktöy og fremgangsmÕte for behandling av en brönn
摘要
申请公布号
NO306175(B1)
申请公布日期
1999.09.27
申请号
NO19900001882
申请日期
1990.04.27
申请人
BAKER HUGHES INC
发明人
CORONADO, MARTIN P.
分类号
E21B33/124;E21B34/00;E21B34/06;E21B34/10;(IPC1-7):E21B33/124;E21B33/06;E21B33/127
主分类号
E21B33/124
代理机构
代理人
主权项
地址
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