Improvements relating to roof supports for mines,申请号GB19590024753-传众专利搜索

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发明名称	Improvements relating to roof supports for mines
摘要
申请公布号	GB954349(A)	申请公布日期	1964.04.02
申请号	GB19590024753	申请日期	1959.07.18
申请人	BAYLISS JONES & BAYLISS LIMITED	发明人	IRVING JAMES
分类号	E21D11/18;E21D11/30;E21D15/36	主分类号	E21D11/18
代理机构		代理人
主权项
地址

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