An improved cap for rigid mine supports,申请号GB19480031125-传众专利搜索

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发明名称	An improved cap for rigid mine supports
摘要
申请公布号	GB663652(A)	申请公布日期	1951.12.27
申请号	GB19480031125	申请日期	1948.12.01
申请人	SOCIETE D'ETUDES ET DE RECHERCHES INDUSTRIELLES ET MINIERES (S.E.R.I.M.)	发明人
分类号	E21D15/54	主分类号	E21D15/54
代理机构		代理人
主权项
地址

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