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发明名称
NON-SEIZE MATERIAL ATTACHMENT FOR A DRILL SLIP SYSTEM
摘要
申请公布号
EP1472433(A4)
申请公布日期
2005.12.07
申请号
EP20020768975
申请日期
2002.10.04
申请人
VARCO I/P, INC.
发明人
VAN RIJZINGEN, J., W., H.;ROLINGS, RONALDUS, R., M.;MASON, DAVID, B.
分类号
E21B19/00;E21B19/10;E21B23/01;E21B29/12;(IPC1-7):E21B19/10
主分类号
E21B19/00
代理机构
代理人
主权项
地址
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