Improvements in or relating to chocks, props and roof supports for mines and the like,申请号GB19590023894-传众专利搜索

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发明名称	Improvements in or relating to chocks, props and roof supports for mines and the like
摘要
申请公布号	GB968668(A)	申请公布日期	1964.09.02
申请号	GB19590023894	申请日期	1959.07.11
申请人	HUDSWELL, CLARKE & CO. LIMITED	发明人	GREEN ROY
分类号	E21D15/58;E21D23/00	主分类号	E21D15/58
代理机构		代理人
主权项
地址

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