Well casing straddle assembly,申请号GB20040017765-传众专利搜索

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发明名称	Well casing straddle assembly
摘要
申请公布号	GB0417765(D0)	申请公布日期	2004.09.08
申请号	GB20040017765	申请日期	2004.08.10
申请人	SMITH INTERNATIONAL INC	发明人
分类号	E21B29/10;E21B33/124	主分类号	E21B29/10
代理机构		代理人
主权项
地址

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