ANELLO DIVERTORE DI FLUSSO PER UNA PUNTA DI TRIVELLAZIONE ROTANTE E RELATIVO PROCEDIMENTO,申请号IT1997MI01019-传众专利搜索

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发明名称	ANELLO DIVERTORE DI FLUSSO PER UNA PUNTA DI TRIVELLAZIONE ROTANTE E RELATIVO PROCEDIMENTO
摘要
申请公布号	ITMI971019(A1)	申请公布日期	1998.10.30
申请号	IT1997MI01019	申请日期	1997.04.30
申请人	DRESSER INDUSTRIES, INC.	发明人	WILLIAMS MARK E.
分类号	E21B10/22;E21B10/25;E21B21/00	主分类号	E21B10/22
代理机构		代理人
主权项
地址

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