PROCESS FOR THE HYDROMECHANICAL EXTRACTION OF MINERAL PILLARS IN UNDERGROUND MINING,申请号ZA19810001541-传众专利搜索

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发明名称	PROCESS FOR THE HYDROMECHANICAL EXTRACTION OF MINERAL PILLARS IN UNDERGROUND MINING
摘要
申请公布号	ZA8101541(B)	申请公布日期	1982.03.31
申请号	ZA19810001541	申请日期	1981.03.09
申请人	RUHRKOHLE AG	发明人	KORTENBUSCH W;FUENFSTUECK J;BARTH W;HARZER J
分类号	E21C	主分类号	E21C
代理机构		代理人
主权项
地址

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