Well tubing plug,申请号US19290402488-传众专利搜索

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发明名称	Well tubing plug
摘要
申请公布号	US1852512(A)	申请公布日期	1932.04.05
申请号	US19290402488	申请日期	1929.10.25
申请人	GULF PRODUCTION COMPANY	发明人	FORNEY SCOTT G.;BORING MAC O.
分类号	E21B33/1295	主分类号	E21B33/1295
代理机构		代理人
主权项
地址

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