CONNECTION OF DRILL STRING RODS,申请号SU19894729615-传众专利搜索

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发明名称	CONNECTION OF DRILL STRING RODS
摘要
申请公布号	SU1712578(A1)	申请公布日期	1992.02.15
申请号	SU19894729615	申请日期	1989.08.16
申请人	TSNI PK I PROKHODCHESKIKH MAS	发明人	BRAKKER ILYA I,SU;OVSYANNIKOV PAVEL A,SU
分类号	E21B17/046;F16D1/02	主分类号	E21B17/046
代理机构		代理人
主权项
地址

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