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发明名称
CORE DRILL
摘要
申请公布号
EP1023522(A1)
申请公布日期
2000.08.02
申请号
EP19980943589
申请日期
1998.09.18
申请人
HALLIBURTON ENERGY SERVICES, INC.
发明人
FANUEL, PHILIPPE;CRAVATTE, PHILIPPE;LEFEVRE OLIVIER
分类号
E21B25/00;E21B25/06;E21B25/10;(IPC1-7):E21B25/00
主分类号
E21B25/00
代理机构
代理人
主权项
地址
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