Tool joint control for blowout preventers,申请号US19380212875-传众专利搜索

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发明名称	Tool joint control for blowout preventers
摘要
申请公布号	US2188141(A)	申请公布日期	1940.01.23
申请号	US19380212875	申请日期	1938.06.10
申请人	CAMERON IRON WORKS	发明人	ABERCROMBIE JAMES S.
分类号	E21B33/06	主分类号	E21B33/06
代理机构		代理人
主权项
地址

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