METHOD OF SINKING PIT-BOTTOM VERTICAL MINE WORKING,申请号SU19884470662-传众专利搜索

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发明名称	METHOD OF SINKING PIT-BOTTOM VERTICAL MINE WORKING
摘要
申请公布号	SU1573182(A1)	申请公布日期	1990.06.23
申请号	SU19884470662	申请日期	1988.08.05
申请人	DN G PI "DNEPROGIPROSHAKHT"	发明人	VAJNBRAND ANATOLIJ L,SU;FEDOTOV IGOR V,SU
分类号	E21D1/00	主分类号	E21D1/00
代理机构		代理人
主权项
地址

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