Improvements in and relating to filters,申请号GB19450013800-传众专利搜索

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发明名称	Improvements in and relating to filters
摘要
申请公布号	GB630548(A)	申请公布日期	1949.10.17
申请号	GB19450013800	申请日期	1945.06.01
申请人	THOMAS EDWARD BEACHAM	发明人
分类号	B01D29/21;B01D35/147	主分类号	B01D29/21
代理机构		代理人
主权项
地址

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