MINING SYSTEMS AND METHODS OF THEIR USE,申请号GB19770036860-传众专利搜索

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发明名称	MINING SYSTEMS AND METHODS OF THEIR USE
摘要
申请公布号	GB1550727(A)	申请公布日期	1979.08.22
申请号	GB19770036860	申请日期	1977.09.03
申请人	GULLICK DOBSON LTD	发明人
分类号	E21C41/00;E21C41/18;E21D23/00;(IPC1-7):E21C41/00	主分类号	E21C41/00
代理机构		代理人
主权项
地址

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