Roof support suitable for use in mines,申请号GB19620033894-传众专利搜索

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发明名称	Roof support suitable for use in mines
摘要
申请公布号	GB983079(A)	申请公布日期	1965.02.10
申请号	GB19620033894	申请日期	1962.09.04
申请人	DOWTY MINING EQUIPMENT LIMITED	发明人	BARRETT WESLEY HORACE
分类号	E21D23/04	主分类号	E21D23/04
代理机构		代理人
主权项
地址

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