BOHRMEISSEL,申请号DE19843406442-传众专利搜索

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发明名称	BOHRMEISSEL
摘要
申请公布号	DE3406442(A1)	申请公布日期	1984.08.23
申请号	DE19843406442	申请日期	1984.02.22
申请人	NL INDUSTRIES,INC.	发明人	D. BARR,JOHN
分类号	E21B10/56;E21B10/567;(IPC1-7):E21B10/52	主分类号	E21B10/56
代理机构		代理人
主权项
地址

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