Sealing method and apparatus,申请号GB20020007371-传众专利搜索

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发明名称	Sealing method and apparatus
摘要
申请公布号	GB0207371(D0)	申请公布日期	2002.05.08
申请号	GB20020007371	申请日期	2002.03.28
申请人	RAWWATER ENGINEERING COMPANY LIMITED	发明人
分类号	E21B33/12;E21B33/134	主分类号	E21B33/12
代理机构		代理人
主权项
地址

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