Well assembly metal seal,申请号GB19950015674-传众专利搜索

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发明名称	Well assembly metal seal
摘要
申请公布号	GB9515674(D0)	申请公布日期	1995.09.27
申请号	GB19950015674	申请日期	1995.07.31
申请人	ABB VETCO GRAY INC	发明人
分类号	E21B33/00;E21B33/04	主分类号	E21B33/00
代理机构		代理人
主权项
地址

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