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发明名称
Drill bit
摘要
申请公布号
GB2260283(A)
申请公布日期
1993.04.14
申请号
GB19910021051
申请日期
1991.10.03
申请人
PAUL MARK * SOUBER
发明人
PAUL MARK * SOUBER
分类号
B23B51/02;E21B10/44;E21B10/58
主分类号
B23B51/02
代理机构
代理人
主权项
地址
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