SUCTION OF GASES FROM BOREHOLES IN COAL MINING,申请号GB19800023371-传众专利搜索

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发明名称	SUCTION OF GASES FROM BOREHOLES IN COAL MINING
摘要
申请公布号	GB2054717(A)	申请公布日期	1981.02.18
申请号	GB19800023371	申请日期	1980.07.17
申请人	MASCHINENFABRIK KORFMANN GMBH	发明人
分类号	E21F7/00;F16L47/06;F16L55/132;(IPC1-7):E21F7/00	主分类号	E21F7/00
代理机构		代理人
主权项
地址

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