Solenoid-controlled Safety Valve for Wells,申请号GB19790016188-传众专利搜索

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发明名称	Solenoid-controlled Safety Valve for Wells
摘要
申请公布号	GB2048336(A)	申请公布日期	1980.12.10
申请号	GB19790016188	申请日期	1979.05.10
申请人	HUEBSCH D L;PAULOS L B	发明人
分类号	E21B34/00;E21B34/06;H01F7/123;H01F7/16;(IPC1-7):E21B34/06	主分类号	E21B34/00
代理机构		代理人
主权项
地址

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