Method of making filters,申请号US19490113232-传众专利搜索

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发明名称	Method of making filters
摘要
申请公布号	US2679090(A)	申请公布日期	1954.05.25
申请号	US19490113232	申请日期	1949.08.30
申请人	FARR COMPANY	发明人	FARR RICHARD S.
分类号	B01D39/12;B01D46/00	主分类号	B01D39/12
代理机构		代理人
主权项
地址

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