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发明名称
BOREHULLPAKNING
摘要
申请公布号
NO914398(A)
申请公布日期
1992.05.13
申请号
NO19910004398
申请日期
1991.11.11
申请人
BAKER HUGHES INC
发明人
BURTNER III JAMES C;FORD RANDLE E;BERZIN VEL;MODY RUSTOM K
分类号
E21B33/127;(IPC1-7):E21B33/127
主分类号
E21B33/127
代理机构
代理人
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地址
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