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经营范围
发明名称
Perforeringskanon for brønnhull
摘要
申请公布号
NO994022(A)
申请公布日期
2000.02.29
申请号
NO19990004022
申请日期
1999.08.20
申请人
WESTERN ATLAS INTERNATIONAL INC
发明人
REESE, JAMES W.;BEVERIDGE, CRAIG A.
分类号
E21B43/1185;(IPC1-7):E21B43/116;E21B43/119
主分类号
E21B43/1185
代理机构
代理人
主权项
地址
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