Method for handling well casings,申请号US19390275119-传众专利搜索

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发明名称	Method for handling well casings
摘要
申请公布号	US2188589(A)	申请公布日期	1940.01.30
申请号	US19390275119	申请日期	1939.05.22
申请人	ELWIN B. HALL;VIRGIL P. BAKER	发明人	ARMENTROUT ARTHUR L.
分类号	E21B19/00	主分类号	E21B19/00
代理机构		代理人
主权项
地址

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