TREPAN DE FORAGE ROTATIF POUR FORAGES PROFONDS,申请号FR19790009943-传众专利搜索

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发明名称	TREPAN DE FORAGE ROTATIF POUR FORAGES PROFONDS
摘要
申请公布号	FR2423626(B1)	申请公布日期	1985.11.29
申请号	FR19790009943	申请日期	1979.04.19
申请人	NORTON CHRISTENSEN INC	发明人
分类号	B22F7/06;B23B27/14;B23P15/30;E21B10/46;E21B10/48;E21B10/56;E21B10/567;E21B10/58;E21B10/60;(IPC1-7):B22F7/06;B23B27/20	主分类号	B22F7/06
代理机构		代理人
主权项
地址

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