MINE ROOF SUPPORT,申请号GB19750009513-传众专利搜索

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发明名称	MINE ROOF SUPPORT
摘要
申请公布号	GB1536138(A)	申请公布日期	1978.12.20
申请号	GB19750009513	申请日期	1975.03.07
申请人	GULLICK DOBSON LTD	发明人
分类号	E21D23/00;E21D23/04;(IPC1-7):E21D19/02	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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