Downhole scraper assembly,申请号GB19980016889-传众专利搜索

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发明名称	Downhole scraper assembly
摘要
申请公布号	GB2340150(B)	申请公布日期	2002.09.18
申请号	GB19980016889	申请日期	1998.08.03
申请人	* SMITH INTERNATIONAL, INC.	发明人	BRUCE * MCGARIAN;IAN ALEXANDER * GILLIES
分类号	E21B37/02;(IPC1-7):E21B37/02	主分类号	E21B37/02
代理机构		代理人
主权项
地址

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