DEVICE FOR CASING RUNNING IN AND CEMENTATION,申请号SU19904804077-传众专利搜索

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发明名称	DEVICE FOR CASING RUNNING IN AND CEMENTATION
摘要
申请公布号	RU1824494(C)	申请公布日期	1993.06.30
申请号	SU19904804077	申请日期	1990.02.22
申请人	NAZAROV VIKTOR I;NAZAROV SERGEJ V	发明人	NAZAROV VIKTOR I;NAZAROV SERGEJ V
分类号	E21B4/14	主分类号	E21B4/14
代理机构		代理人
主权项
地址

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