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发明名称
DIAMOND ROTATING BIT
摘要
申请公布号
AU2511284(A)
申请公布日期
1984.09.06
申请号
AU19840025112
申请日期
1984.02.28
申请人
CHRISTENSEN INC.
发明人
HOWARD D. LINK
分类号
E21B10/46;E21B10/56;E21B10/567;E21B10/60
主分类号
E21B10/46
代理机构
代理人
主权项
地址
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