Drilling process and device,申请号AU19920027630-传众专利搜索

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发明名称	Drilling process and device
摘要
申请公布号	AU650581(B2)	申请公布日期	1994.06.23
申请号	AU19920027630	申请日期	1992.10.26
申请人	HEINZ RENFER	发明人	ANDREA LINARD MATHIS
分类号	E21B4/14;E21B6/00;E21B6/02;(IPC1-7):E21B6/00	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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