DRILLING BIT FOR STARTING A NEW BOREHOLE,申请号SU19843761837-传众专利搜索

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发明名称	DRILLING BIT FOR STARTING A NEW BOREHOLE
摘要
申请公布号	SU1239250(A1)	申请公布日期	1986.06.23
申请号	SU19843761837	申请日期	1984.07.03
申请人	UKHTINSKIJ INDUSTRIALNYJ INSTITUT	发明人	GERZHBERG YURIJ M,SU;DYUSUSHE SERGEJ A,SU;STARTSEVA TAMARA G,SU
分类号	E21B10/00;E21B7/08	主分类号	E21B10/00
代理机构		代理人
主权项
地址

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