Perfectionnements aux machines pour l'exploitation des mines,申请号FRD1013785-传众专利搜索

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发明名称	Perfectionnements aux machines pour l'exploitation des mines
摘要
申请公布号	FR1013785(A)	申请公布日期	1952.08.04
申请号	FRD1013785	申请日期	1950.03.03
申请人	MAVOR & COULSON LIMITED	发明人
分类号	E21C35/10	主分类号	E21C35/10
代理机构		代理人
主权项
地址

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