VORRICHTUNG ZUM STOSSSCHUTZ IN BOHRLOECHERN.,申请号AT19860307417T-传众专利搜索

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发明名称	VORRICHTUNG ZUM STOSSSCHUTZ IN BOHRLOECHERN.
摘要
申请公布号	AT60400(T)	申请公布日期	1991.02.15
申请号	AT19860307417T	申请日期	1986.09.26
申请人	HALLIBURTON COMPANY	发明人	EDWARDS, A. GLEN;BRIEGER, EMMET F.;WESSON, DAVID S.
分类号	E21B17/07;E21B17/10;E21B47/00;(IPC1-7):E21B17/07	主分类号	E21B17/07
代理机构		代理人
主权项
地址

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