MULTIPLE VALVE POCKET WELL MANDREL,申请号GB19740051484-传众专利搜索

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发明名称	MULTIPLE VALVE POCKET WELL MANDREL
摘要
申请公布号	GB1478519(A)	申请公布日期	1977.07.06
申请号	GB19740051484	申请日期	1974.11.27
申请人	BASS INC P;RICHARDSON FOUNDATION S	发明人
分类号	E21B23/03;(IPC1-7):E21B43/12;E21B23/00	主分类号	E21B23/03
代理机构		代理人
主权项
地址

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