System and method of coal seams degassing, especially on significant depth,申请号PL20080384319-传众专利搜索

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发明名称	System and method of coal seams degassing, especially on significant depth
摘要
申请公布号	PL384319(A1)	申请公布日期	2009.08.03
申请号	PL20080384319	申请日期	2008.01.24
申请人	MARKS GRZEGORZ;GRANIECZNY LESZEK;HERMAN JAN	发明人	MARKS GRZEGORZ;GRANIECZNY LESZEK;HERMAN JAN
分类号	E21F7/00	主分类号	E21F7/00
代理机构		代理人
主权项
地址

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