METHOD OF VERTICAL SHAFT SINKING,申请号SU19884470457-传众专利搜索

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发明名称	METHOD OF VERTICAL SHAFT SINKING
摘要
申请公布号	SU1567779(A1)	申请公布日期	1990.05.30
申请号	SU19884470457	申请日期	1988.08.05
申请人	DN G PI "DNEPROGIPROSHAKHT"	发明人	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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