METHOD OF DRIVING MAJOR MINE WORKINGS,申请号SU19884470389-传众专利搜索

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发明名称	METHOD OF DRIVING MAJOR MINE WORKINGS
摘要
申请公布号	SU1617144(A1)	申请公布日期	1990.12.30
申请号	SU19884470389	申请日期	1988.08.01
申请人	PROYAVKIN EVGENIJ T,SU	发明人	PROYAVKIN EVGENIJ T,SU
分类号	E21C41/18;E21D13/02	主分类号	E21C41/18
代理机构		代理人
主权项
地址

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