Mine roof supporting device,申请号GB19610029906-传众专利搜索

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发明名称	Mine roof supporting device
摘要
申请公布号	GB955568(A)	申请公布日期	1964.04.15
申请号	GB19610029906	申请日期	1961.08.18
申请人	DOWTY MINING EQUIPMENT LIMITED	发明人	DOWTY GEORGE HERBERT;MILLS JOSEPH ALEXANDER WALLACE
分类号	E21D17/082;E21D23/06	主分类号	E21D17/082
代理机构		代理人
主权项
地址

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