Means and method of straightening well bores,申请号US19310546766-传众专利搜索

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发明名称	Means and method of straightening well bores
摘要
申请公布号	US1971480(A)	申请公布日期	1934.08.28
申请号	US19310546766	申请日期	1931.06.25
申请人	J. S. ABERCROMBIE COMPANY	发明人	EARLEY MOYE G.
分类号	E21B7/10	主分类号	E21B7/10
代理机构		代理人
主权项
地址

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