Dispositif d'excavation de la salle des machines dans l'abattage mécanique de veines de charbon,申请号FR19640965137-传众专利搜索

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发明名称	Dispositif d'excavation de la salle des machines dans l'abattage mécanique de veines de charbon
摘要
申请公布号	FR1383480(A)	申请公布日期	1964.12.24
申请号	FR19640965137	申请日期	1964.02.26
申请人	HALBACH & BRAUN	发明人
分类号	E21C35/12	主分类号	E21C35/12
代理机构		代理人
主权项
地址

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