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发明名称
SELF-ADJUSTING BIT BASKET
摘要
申请公布号
EP0276161(B1)
申请公布日期
1992.08.05
申请号
EP19880300508
申请日期
1988.01.21
申请人
INCO LIMITED
发明人
KAVEN, ALLEN H.
分类号
E21B19/16;E21B19/18
主分类号
E21B19/16
代理机构
代理人
主权项
地址
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