Sample taking tool for oil wells,申请号US19370174442-传众专利搜索

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发明名称	Sample taking tool for oil wells
摘要
申请公布号	US2128212(A)	申请公布日期	1938.08.23
申请号	US19370174442	申请日期	1937.11.13
申请人	MULLINS SAMUEL A	发明人	MULLINS SAMUEL A.
分类号	E21B49/08	主分类号	E21B49/08
代理机构		代理人
主权项
地址

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