DOUBLE CLOSING DEVICE MEMBERS PARTICULARLY FOR BUILDING UP THE SURFACE CLOSING SYSTEM OF TWO PIPE COLUMN WELL RORMATIONS,申请号HU19840002814-传众专利搜索

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发明名称	DOUBLE CLOSING DEVICE MEMBERS PARTICULARLY FOR BUILDING UP THE SURFACE CLOSING SYSTEM OF TWO PIPE COLUMN WELL RORMATIONS
摘要
申请公布号	HU192411(B)	申请公布日期	1987.06.29
申请号	HU19840002814	申请日期	1984.07.20
申请人	DUNANTULI KOEOLAJIPARI GEPGYAR,HU	发明人	HEGEDUES,MIKLOS,HU;HILDEBRAND,LASZLO,HU;TOEROEK,IVAN,HU
分类号	E21B33/047;(IPC1-7):E21B33/047	主分类号	E21B33/047
代理机构		代理人
主权项
地址

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