BLAST HOLE DRILLING APPARATUS,申请号SU19782658961-传众专利搜索

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发明名称	BLAST HOLE DRILLING APPARATUS
摘要
申请公布号	SU711282(A1)	申请公布日期	1980.01.25
申请号	SU19782658961	申请日期	1978.08.14
申请人	VNII NERUDNYKH STROITELNYKH MATERIALOV GIDROMEKHANIZATSII	发明人	ZHIDKOV ANATOLIJ V,SU;BULAVTSEV VLADIMIR A,SU
分类号	E21B15/00;(IPC1-7):E21C11/02	主分类号	E21B15/00
代理机构		代理人
主权项
地址

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