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经营范围
发明名称
Rock Boring Process and Apparatus
摘要
申请公布号
CA2135975(A1)
申请公布日期
1995.10.30
申请号
CA19942135975
申请日期
1994.11.16
申请人
UTI ENERGY CORP.
发明人
ROWEKAMP, KEITH J.
分类号
E21B7/08;E21B7/20;(IPC1-7):E21B3/00;E21B7/00;E21B7/04;E21C1/00
主分类号
E21B7/08
代理机构
代理人
主权项
地址
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