Improvements in or relating to mine roof supports,申请号GB19650050051-传众专利搜索

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发明名称	Improvements in or relating to mine roof supports
摘要
申请公布号	GB1105723(A)	申请公布日期	1968.03.13
申请号	GB19650050051	申请日期	1965.11.17
申请人	GULLICK LIMITED	发明人	SEDDON JEFFREY WILLIAM
分类号	E21D23/00	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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