METHOD OF OPENING-UP AND WORKING MINING LEVELS OF ELONGATED OPEN PITS,申请号SU19833703678-传众专利搜索

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发明名称	METHOD OF OPENING-UP AND WORKING MINING LEVELS OF ELONGATED OPEN PITS
摘要
申请公布号	SU1157234(A1)	申请公布日期	1985.05.23
申请号	SU19833703678	申请日期	1983.12.22
申请人	BREKHOV IVAN T,SU	发明人	BREKHOV IVAN T,SU
分类号	E21C41/00;(IPC1-7):E21C41/00	主分类号	E21C41/00
代理机构		代理人
主权项
地址

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