Apparatus for flowing oil or gas wells,申请号US19400367717-传众专利搜索

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发明名称	Apparatus for flowing oil or gas wells
摘要
申请公布号	US2362442(A)	申请公布日期	1944.11.14
申请号	US19400367717	申请日期	1940.11.29
申请人	BAILY ERLAN C	发明人	BAILY ERLAN C.
分类号	E21B43/12;F04F5/24;F04F5/46	主分类号	E21B43/12
代理机构		代理人
主权项
地址

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