CONNECTION ARRANGEMENT FOR PREVENTING THE EXTRUSIONS OCCURING AT DEEP DRILLINGS,申请号HU19890000440-传众专利搜索

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发明名称	CONNECTION ARRANGEMENT FOR PREVENTING THE EXTRUSIONS OCCURING AT DEEP DRILLINGS
摘要
申请公布号	HU205640(B)	申请公布日期	1992.05.28
申请号	HU19890000440	申请日期	1989.01.30
申请人	NEHEZIPARI MUESZAKI EGYETEM,HU;KOEOLAJKUTATO VALLALAT,HU	发明人	DOMBI,ISTVAN,HU;SZEPESI,JOZSEF,HU;OESZ,ARPAD,HU
分类号	E21B33/06;(IPC1-7):E21B33/06	主分类号	E21B33/06
代理机构		代理人
主权项
地址

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