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发明名称
NOZZLE MEANS FOR ROTARY DRILL BITS
摘要
申请公布号
CA2022495(A1)
申请公布日期
1991.10.01
申请号
CA19902022495
申请日期
1990.08.01
申请人
REED TOOL COMPANY
发明人
IVIE, CRAIG R.;PEARCE, DAVID E.
分类号
E21B10/18;(IPC1-7):E21B10/18
主分类号
E21B10/18
代理机构
代理人
主权项
地址
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