System som spenner over et hull og fremgangsmåte for setting av et slikt system,申请号NO19970003731-传众专利搜索

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发明名称	System som spenner over et hull og fremgangsmåte for setting av et slikt system
摘要
申请公布号	NO973731(A)	申请公布日期	1997.10.13
申请号	NO19970003731	申请日期	1997.08.13
申请人	SITE OIL TOOLS INC	发明人	SERAFIN, VITOLD P.
分类号	E21B33/124;(IPC1-7):E21B33/127	主分类号	E21B33/124
代理机构		代理人
主权项
地址

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