Universal flow device for wells,申请号US19380231316-传众专利搜索

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发明名称	Universal flow device for wells
摘要
申请公布号	US2247023(A)	申请公布日期	1941.06.24
申请号	US19380231316	申请日期	1938.09.23
申请人	HUMASON	发明人	HUMASON GRANVILLE A.;CLAY WALTER J.
分类号	E21B43/12	主分类号	E21B43/12
代理机构		代理人
主权项
地址

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