DRILLING APPARATUS WITH A RADIALLY DISPLACEABLE REAMER AS WELL AS A REAMER AND A PILOT BIT,申请号KR1020017000812-传众专利搜索

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发明名称	DRILLING APPARATUS WITH A RADIALLY DISPLACEABLE REAMER AS WELL AS A REAMER AND A PILOT BIT
摘要
申请公布号	KR20010053572(A)	申请公布日期	2001.06.25
申请号	KR1020017000812	申请日期	2001.01.19
申请人		发明人
分类号	E21B10/32	主分类号	E21B10/32
代理机构		代理人
主权项
地址

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