Metal seal with grooved inlays,申请号GB19910011658-传众专利搜索

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发明名称	Metal seal with grooved inlays
摘要
申请公布号	GB2244502(B)	申请公布日期	1994.05.18
申请号	GB19910011658	申请日期	1991.05.30
申请人	* ABB VETCO GRAY INC	发明人	CARL F * BOEHM JR
分类号	E21B33/00;E21B33/04;F16J15/08;(IPC1-7):E21B33/04	主分类号	E21B33/00
代理机构		代理人
主权项
地址

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