Overshot for controlling wild wells,申请号US19550496367-传众专利搜索

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发明名称	Overshot for controlling wild wells
摘要
申请公布号	US2793700(A)	申请公布日期	1957.05.28
申请号	US19550496367	申请日期	1955.03.24
申请人	ESSO RESEARCH AND ENGINEERING COMPANY	发明人	ECKEL JOHN E.
分类号	E21B33/064	主分类号	E21B33/064
代理机构		代理人
主权项
地址

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