ECCENTRIC GRAVEL-PACKED WELL LINER,申请号USD3556219-传众专利搜索

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发明名称	ECCENTRIC GRAVEL-PACKED WELL LINER
摘要
申请公布号	US3556219(A)	申请公布日期	1971.01.19
申请号	USD3556219	申请日期	1968.09.18
申请人	PHILLIPS PETROLEUM CO.	发明人	ROBERT F. MELDAU
分类号	E21B43/04;E21B43/08;(IPC1-7):E21B43/04	主分类号	E21B43/04
代理机构		代理人
主权项
地址

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