TRYKKBETJENT ISOLERINGSVENTIL FOR ANVENDELSE I EN OLJEBROENN-PROEVESTRENG,申请号NO19760002129-传众专利搜索

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发明名称	TRYKKBETJENT ISOLERINGSVENTIL FOR ANVENDELSE I EN OLJEBROENN-PROEVESTRENG
摘要
申请公布号	NO149674(C)	申请公布日期	1984.05.30
申请号	NO19760002129	申请日期	1976.06.18
申请人	HALLIBURTON COMP,	发明人	FARLEY, DAVID L.,;EVANS, ROBERT T.,
分类号	E21B34/00;E21B34/10;E21B49/00;E21B49/08;(IPC1-7):E21B34/06	主分类号	E21B34/00
代理机构		代理人
主权项
地址

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