Appareil de soutènement pour mines,申请号FR19620886806-传众专利搜索

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发明名称	Appareil de soutènement pour mines
摘要
申请公布号	FR1313548(A)	申请公布日期	1962.12.28
申请号	FR19620886806	申请日期	1962.02.02
申请人	DOWTY MINING EQUIPMENT LIMITED	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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