Improvements in oil and like wells,申请号GB19590028827-传众专利搜索

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发明名称	Improvements in oil and like wells
摘要
申请公布号	GB864160(A)	申请公布日期	1961.03.29
申请号	GB19590028827	申请日期	1959.08.24
申请人	CAMCO, INCORPORATED	发明人
分类号	E21B43/12	主分类号	E21B43/12
代理机构		代理人
主权项
地址

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