Well testing device,申请号US19270189294-传众专利搜索

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发明名称	Well testing device
摘要
申请公布号	US1870634(A)	申请公布日期	1932.08.09
申请号	US19270189294	申请日期	1927.05.06
申请人	LEWIS GUY V	发明人	LEWIS GUY V.
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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