SISTEMA DI CONTROLLO PER IMPIANTI DI TRIVELLAZIONE DI POZZI,申请号IT19790049512-传众专利搜索

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发明名称	SISTEMA DI CONTROLLO PER IMPIANTI DI TRIVELLAZIONE DI POZZI
摘要
申请公布号	IT7949512(D0)	申请公布日期	1979.06.22
申请号	IT19790049512	申请日期	1979.06.22
申请人	DRESSER INDUSTRIES INC.SOCIETA' DELLO STATO DEL DELAWARE	发明人
分类号	E21B21/08;E21B44/00	主分类号	E21B21/08
代理机构		代理人
主权项
地址

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