Dispositif de soutènement pour mines,申请号FR19580766669-传众专利搜索

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发明名称	Dispositif de soutènement pour mines
摘要
申请公布号	FR1215579(A)	申请公布日期	1960.04.19
申请号	FR19580766669	申请日期	1958.05.29
申请人	DOWTY MINING EQUIPMENT LIMITED	发明人
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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