Improvements in and relating to radio frequency electric filters,申请号GB19370020140-传众专利搜索

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发明名称	Improvements in and relating to radio frequency electric filters
摘要
申请公布号	GB499590(A)	申请公布日期	1939.01.23
申请号	GB19370020140	申请日期	1937.07.21
申请人	BELLING AND LEE LIMITED;FREDERICK RICHMOND WENTWORTH STRAFFORD	发明人
分类号	H01P1/201	主分类号	H01P1/201
代理机构		代理人
主权项
地址

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