Appareil de forage,申请号FR19610864167-传众专利搜索

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发明名称	Appareil de forage
摘要
申请公布号	FR1295651(A)	申请公布日期	1962.06.08
申请号	FR19610864167	申请日期	1961.06.07
申请人	JOY MANUFACTURING COMPANY	发明人
分类号	E21B25/02	主分类号	E21B25/02
代理机构		代理人
主权项
地址

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