AVLEDNINGS- OG UTBLAASNINGSSIKRINGS-SYSTEM FOR BORERIGG PLASERT PAA SJOEBUNNEN.,申请号NO19860003379-传众专利搜索

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发明名称	AVLEDNINGS- OG UTBLAASNINGSSIKRINGS-SYSTEM FOR BORERIGG PLASERT PAA SJOEBUNNEN.
摘要
申请公布号	NO863379(D0)	申请公布日期	1986.08.22
申请号	NO19860003379	申请日期	1986.08.22
申请人	HYDRIL CO	发明人	ALEXANDER GABRIEL G
分类号	E21B21/00;E21B21/10;E21B33/064;(IPC1-7):E21B/	主分类号	E21B21/00
代理机构		代理人
主权项
地址

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