System for in situ replacement of cutting means for a ground drill,申请号ZA19950000831-传众专利搜索

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发明名称	System for in situ replacement of cutting means for a ground drill
摘要
申请公布号	ZA9500831(B)	申请公布日期	1996.01.10
申请号	ZA19950000831	申请日期	1995.02.02
申请人	DOWN HOLE TECHNOLOGIES PTY LTD.	发明人	GAVIN THOMAS MCLEOD;MATTHEW VANCE EGAN
分类号	E21B	主分类号	E21B
代理机构		代理人
主权项
地址

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