Method and apparatus for improved communication in a wellbore utilizing acoustic signals,申请号GB20000014294-传众专利搜索

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发明名称	Method and apparatus for improved communication in a wellbore utilizing acoustic signals
摘要
申请公布号	GB0014294(D0)	申请公布日期	2000.08.02
申请号	GB20000014294	申请日期	1996.10.18
申请人	BAKER HUGHES INCORPORATED	发明人
分类号	E21B23/04;E21B47/18	主分类号	E21B23/04
代理机构		代理人
主权项
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