Casing elevator construction for deep wells,申请号GB19340014448-传众专利搜索

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发明名称	Casing elevator construction for deep wells
摘要
申请公布号	GB420045(A)	申请公布日期	1934.11.23
申请号	GB19340014448	申请日期	1934.05.12
申请人	BYRON JACKSON CO.	发明人
分类号	E21B19/06	主分类号	E21B19/06
代理机构		代理人
主权项
地址

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