Improvements in filters,申请号GB19390011528-传众专利搜索

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发明名称	Improvements in filters
摘要
申请公布号	GB527589(A)	申请公布日期	1940.10.11
申请号	GB19390011528	申请日期	1939.04.15
申请人	THE DORR COMPANY, INC.	发明人
分类号	B01D33/073;B01D37/02	主分类号	B01D33/073
代理机构		代理人
主权项
地址

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