Advancing frame-type hydraulic mine roof support for face galleries,申请号GB19610004427-传众专利搜索

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发明名称	Advancing frame-type hydraulic mine roof support for face galleries
摘要
申请公布号	GB968694(A)	申请公布日期	1964.09.02
申请号	GB19610004427	申请日期	1961.02.06
申请人	GEWERKSCHAFT EISENHUETTE WESTFALIA	发明人
分类号	E21D23/00;E21D23/08	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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