Dispositif de commande pour supports de toit de mine,申请号FR19630934230-传众专利搜索

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发明名称	Dispositif de commande pour supports de toit de mine
摘要
申请公布号	FR1355414(A)	申请公布日期	1964.03.13
申请号	FR19630934230	申请日期	1963.05.09
申请人	DOWTY MINING EQUIPMENT LIMITED	发明人
分类号	E21D23/00;E21D23/26;F15B21/08	主分类号	E21D23/00
代理机构		代理人
主权项
地址

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