Perfectionnements aux têtes de mèches de forage,申请号FR19590800871-传众专利搜索

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发明名称	Perfectionnements aux têtes de mèches de forage
摘要
申请公布号	FR1240063(A)	申请公布日期	1960.09.02
申请号	FR19590800871	申请日期	1959.07.23
申请人		发明人	GRUERE CHARLES
分类号	E21B10/02	主分类号	E21B10/02
代理机构		代理人
主权项
地址

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