DRILL STRING DISCONNECTOR,申请号SU19904838119-传众专利搜索

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发明名称	DRILL STRING DISCONNECTOR
摘要
申请公布号	RU1828904(C)	申请公布日期	1993.07.23
申请号	SU19904838119	申请日期	1990.05.03
申请人	VELIKOSELSKIJ MARK A	发明人	VELIKOSELSKIJ MARK A
分类号	E21B17/06	主分类号	E21B17/06
代理机构		代理人
主权项
地址

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