Improvements in or relating to filters,申请号GB19400001559-传众专利搜索

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发明名称	Improvements in or relating to filters
摘要
申请公布号	GB538282(A)	申请公布日期	1941.07.28
申请号	GB19400001559	申请日期	1940.01.25
申请人	FREDERICK HEATHER	发明人
分类号	C10K1/02	主分类号	C10K1/02
代理机构		代理人
主权项
地址

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