APPARAT FOR STYRT OPPTAK AV AKSIAL- OG VRIDNINGSKREFTER IEN BROENNSTRENG.,申请号NO19890002944-传众专利搜索

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发明名称	APPARAT FOR STYRT OPPTAK AV AKSIAL- OG VRIDNINGSKREFTER IEN BROENNSTRENG.
摘要
申请公布号	NO892944(D0)	申请公布日期	1989.07.18
申请号	NO19890002944	申请日期	1989.07.18
申请人	DRILEX SYSTEMS INC	发明人	FORREST, JOHN
分类号	E21B17/07;E21B44/00;(IPC1-7):E21B/	主分类号	E21B17/07
代理机构		代理人
主权项
地址

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