Filter opening means,申请号US19290381845-传众专利搜索

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发明名称	Filter opening means
摘要
申请公布号	US1813601(A)	申请公布日期	1931.07.07
申请号	US19290381845	申请日期	1929.07.29
申请人	STANDARD OIL COMPANY	发明人	BACHELDOR WILLIAM H.
分类号	B01D29/96	主分类号	B01D29/96
代理机构		代理人
主权项
地址

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