Well fishing tool,申请号US19380231925-传众专利搜索

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发明名称	Well fishing tool
摘要
申请公布号	US2236761(A)	申请公布日期	1941.04.01
申请号	US19380231925	申请日期	1938.09.27
申请人	NICHOLS JOE E	发明人	NICHOLS JOE E.
分类号	E21B31/12	主分类号	E21B31/12
代理机构		代理人
主权项
地址

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