A CONTROL LINE,申请号GB19900011873-传众专利搜索

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发明名称	A CONTROL LINE
摘要
申请公布号	GB9011873(D0)	申请公布日期	1990.07.18
申请号	GB19900011873	申请日期	1990.05.26
申请人	POLYMER APPLICATIONS LIMITED	发明人
分类号	E21B17/20;F16L11/22	主分类号	E21B17/20
代理机构		代理人
主权项
地址

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