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发明名称
Innretning og fremgangsmÕte for sideveis komplettering av en br°nnboring
摘要
申请公布号
NO983243(A)
申请公布日期
1999.04.12
申请号
NO19980003243
申请日期
1998.07.14
申请人
DRESSER INDUSTRIES INC
发明人
LAGRANGE, TIMOTHY EDWARD
分类号
E21B7/08;E21B41/00;E21B43/10;(IPC1-7):E21B43/10;E21B33/10;E21B43/00
主分类号
E21B7/08
代理机构
代理人
主权项
地址
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