Well strainer and process of making same,申请号US19310562531-传众专利搜索

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发明名称	Well strainer and process of making same
摘要
申请公布号	US1874035(A)	申请公布日期	1932.08.30
申请号	US19310562531	申请日期	1931.09.12
申请人	HUGHES TOOL COMPANY	发明人	FLETCHER HAROLD W.
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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