Sikkerhetsventil og pumpe for borehull,申请号NO19990002442-传众专利搜索

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发明名称	Sikkerhetsventil og pumpe for borehull
摘要
申请公布号	NO992442(D0)	申请公布日期	1999.05.20
申请号	NO19990002442	申请日期	1999.05.20
申请人	HEAD, PHILIP	发明人	HEAD, PHILIP
分类号	E21B23/02;E21B33/04;E21B34/06;E21B43/12;(IPC1-7):E21B	主分类号	E21B23/02
代理机构		代理人
主权项
地址

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