BLAST-HOLE DRILLING DEVICE,申请号SU19904906836-传众专利搜索

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发明名称	BLAST-HOLE DRILLING DEVICE
摘要
申请公布号	RU1809035(C)	申请公布日期	1993.04.15
申请号	SU19904906836	申请日期	1990.12.07
申请人	VSESOYUZNYJ NAUCHNO-ISSLEDOVATELSKIJ I PROEKTNO-KONSTRUKTORSKIJ INSTITUT DOBYCHI UGLYA GIDRAVLICHESKIM SPOSOBOM	发明人	GALKIN VLADIMIR N;EREMINA LYUDMILA F;MELNIK VLADIMIR V
分类号	E21B19/081;E21B44/02;(IPC1-7):E21C5/08;E21C5/16	主分类号	E21B19/081
代理机构		代理人
主权项
地址

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