BOHRMEISSEL MIT SCHLEIFRINGABDICHTUNG.,申请号DE19863686440-传众专利搜索

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发明名称	BOHRMEISSEL MIT SCHLEIFRINGABDICHTUNG.
摘要
申请公布号	DE3686440(D1)	申请公布日期	1992.09.24
申请号	DE19863686440	申请日期	1986.05.06
申请人	HUGHES TOOL CO., HOUSTON, TEX., US	发明人	BURR, BRUCE HAWLEY, HOUSTON TEXAS 77089, US
分类号	E21B10/24;E21B10/22;E21B10/25;F16J15/34;(IPC1-7):E21B10/22	主分类号	E21B10/24
代理机构		代理人
主权项
地址

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