Haveuse à chaîne pour le travail dans les mines de charbon et autres minéraux,申请号FRD851191-传众专利搜索

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发明名称	Haveuse à chaîne pour le travail dans les mines de charbon et autres minéraux
摘要
申请公布号	FR851191(A)	申请公布日期	1940.01.04
申请号	FRD851191	申请日期	1939.03.04
申请人	MAVOR AND COULSON, LIMITED	发明人
分类号	E21C25/50	主分类号	E21C25/50
代理机构		代理人
主权项
地址

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