A CHUCK ENGAGING DEVICE FOR A DRILL ROD,申请号ZA19850001024-传众专利搜索

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发明名称	A CHUCK ENGAGING DEVICE FOR A DRILL ROD
摘要
申请公布号	ZA8501024(B)	申请公布日期	1985.09.25
申请号	ZA19850001024	申请日期	1985.02.11
申请人	SANDVIK (PROPRIETARY) LIMITED	发明人	ROBERT HERMAN GERRIT LANDSMAN
分类号	E21B;E21C	主分类号	E21B
代理机构		代理人
主权项
地址

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