RECIRCULATION METHOD FOR VENTILATION OF UNDERGROUND WORKINGS,申请号RU19940017176-传众专利搜索

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发明名称	RECIRCULATION METHOD FOR VENTILATION OF UNDERGROUND WORKINGS
摘要
申请公布号	RU2085746(C1)	申请公布日期	1997.07.27
申请号	RU19940017176	申请日期	1994.05.10
申请人	STARTSEV VLADIMIR A	发明人	STARTSEV VLADIMIR A
分类号	E21F1/00;(IPC1-7):E21F1/00	主分类号	E21F1/00
代理机构		代理人
主权项
地址

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