Advancing mine roof support systems,申请号GB19610006334-传众专利搜索

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发明名称	Advancing mine roof support systems
摘要
申请公布号	GB1009051(A)	申请公布日期	1965.11.03
申请号	GB19610006334	申请日期	1961.02.21
申请人	COAL INDUSTRY (PATENTS) LIMITED	发明人	COWLES ROBERT;EASTWOOD PETER FRANK;RASON 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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