MINE ROOF SUPPORTS,申请号GB19740039733-传众专利搜索

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发明名称	MINE ROOF SUPPORTS
摘要
申请公布号	GB1507311(A)	申请公布日期	1978.04.12
申请号	GB19740039733	申请日期	1974.09.12
申请人	GULLICK DOBSON LTD	发明人
分类号	E21D23/00;E21D23/04;E21D23/06;(IPC1-7):E21D23/00	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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