Pulling tool assembly for well equipment,申请号US19570698621-传众专利搜索

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发明名称	Pulling tool assembly for well equipment
摘要
申请公布号	US3023811(A)	申请公布日期	1962.03.06
申请号	US19570698621	申请日期	1957.11.25
申请人	OTIS ENGINEERING CORPORATION	发明人	GREEN WILLIAM G.
分类号	E21B31/107	主分类号	E21B31/107
代理机构		代理人
主权项
地址

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