Improvements in preform elements and mountings therefor,申请号GB19980003096-传众专利搜索

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发明名称	Improvements in preform elements and mountings therefor
摘要
申请公布号	GB9803096(D0)	申请公布日期	1998.04.08
申请号	GB19980003096	申请日期	1998.02.14
申请人	CAMCO INTERNATIONAL (UK) LIMITED	发明人
分类号	E21B10/56;E21B10/567;E21B10/573	主分类号	E21B10/56
代理机构		代理人
主权项
地址

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