Well fluid and test method,申请号US19890402051-传众专利搜索

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发明名称	Well fluid and test method
摘要
申请公布号	US4987960(A)	申请公布日期	1991.01.29
申请号	US19890402051	申请日期	1989.09.01
申请人	BAROID TECHNOLOGY, INC.	发明人	DARLINGTON, ROY K.
分类号	E21B49/00;G01N33/28	主分类号	E21B49/00
代理机构		代理人
主权项
地址

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