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发明名称
BOHRLOCHVORRICHTUNG
摘要
申请公布号
DE60003425(D1)
申请公布日期
2003.07.24
申请号
DE20006003425
申请日期
2000.03.08
申请人
WEATHERFORD/LAMB, INC.
发明人
MCHARDY, COLIN
分类号
E21B21/10;E21B34/10;(IPC1-7):E21B21/10
主分类号
E21B21/10
代理机构
代理人
主权项
地址
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