EQUALIZING MEANS FOR A SUBSURFACE WELL SAFETY VALVE,申请号GB19870009402-传众专利搜索

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发明名称	EQUALIZING MEANS FOR A SUBSURFACE WELL SAFETY VALVE
摘要
申请公布号	GB2195377(A)	申请公布日期	1988.04.07
申请号	GB19870009402	申请日期	1987.04.21
申请人	* CAMCO INCORPORATED	发明人	ARTHUR JOHN * MORRIS
分类号	E21B34/00;E21B34/10;(IPC1-7):E21B34/10	主分类号	E21B34/00
代理机构		代理人
主权项
地址

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