Oil well strainer,申请号US19270228242-传众专利搜索

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发明名称	Oil well strainer
摘要
申请公布号	US1861722(A)	申请公布日期	1932.06.07
申请号	US19270228242	申请日期	1927.10.24
申请人	THE INTERNATIONAL NICKEL COMPANY, INC.	发明人	SEARLE HAROLD EDWIN
分类号	E21B43/08	主分类号	E21B43/08
代理机构		代理人
主权项
地址

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