APPARATUS FOR CLOSING-OFF A WELL,申请号SU19813291487-传众专利搜索

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发明名称	APPARATUS FOR CLOSING-OFF A WELL
摘要
申请公布号	SU973804(A1)	申请公布日期	1982.11.15
申请号	SU19813291487	申请日期	1981.03.27
申请人	DRAGUNSKIJ BORIS L,SU;MAKAROV STANISLAV A,SU;ZARETSKIJ BORIS YA,SU	发明人	DRAGUNSKIJ BORIS L,SU;MAKAROV STANISLAV A,SU;ZARETSKIJ BORIS YA,SU
分类号	E21B43/12;(IPC1-7):E21B43/12	主分类号	E21B43/12
代理机构		代理人
主权项
地址

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