Machine d'extraction de minerai,申请号FR19600820516-传众专利搜索

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发明名称	Machine d'extraction de minerai
摘要
申请公布号	FR1250268(A)	申请公布日期	1961.01.06
申请号	FR19600820516	申请日期	1960.03.05
申请人	COAL INDUSTRY (PATENTS) LIMITED	发明人
分类号	E21C27/04	主分类号	E21C27/04
代理机构		代理人
主权项
地址

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