Rotary jar type well tool,申请号US19580762593-传众专利搜索

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发明名称	Rotary jar type well tool
摘要
申请公布号	US2988147(A)	申请公布日期	1961.06.13
申请号	US19580762593	申请日期	1958.09.22
申请人	HOUSTON ENGINEERS, INC.	发明人	WEBB DERREL D.
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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