ECCENTRIC WEIGHTED DRILL PIPE,申请号SU19803252256-传众专利搜索

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发明名称	ECCENTRIC WEIGHTED DRILL PIPE
摘要
申请公布号	SU968309(A1)	申请公布日期	1982.10.23
申请号	SU19803252256	申请日期	1980.12.25
申请人	VNII RAZRABOTKI EKSPLUATATSII NEFTEPROMYSLOVYKH TRUB	发明人	FAJN GENRIKH M,SU;DANELYANTS SERGEJ M,SU;NEJMARK ARKADIJ S,SU;SNAREV ANATOLIJ I,SU;SYROVATKIN LEONID V,SU
分类号	E21B17/00;(IPC1-7):E21B17/00	主分类号	E21B17/00
代理机构		代理人
主权项
地址

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