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发明名称
Shifiting tool
摘要
申请公布号
GB9813026(D0)
申请公布日期
1998.08.12
申请号
GB19980013026
申请日期
1996.01.17
申请人
BAKER HUGHES INCORPORATED
发明人
分类号
E21B23/04;E21B33/14
主分类号
E21B23/04
代理机构
代理人
主权项
地址
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