Machine pour l'exploitation des mines,申请号FRD935475-传众专利搜索

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发明名称	Machine pour l'exploitation des mines
摘要
申请公布号	FR935475(A)	申请公布日期	1948.06.18
申请号	FRD935475	申请日期	1946.10.30
申请人	MAVOR & COULSON LIMITED	发明人
分类号	E21C27/32	主分类号	E21C27/32
代理机构		代理人
主权项
地址

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