Improvements relating to electrical filter networks,申请号GB19390007019-传众专利搜索

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发明名称	Improvements relating to electrical filter networks
摘要
申请公布号	GB525931(A)	申请公布日期	1940.09.06
申请号	GB19390007019	申请日期	1939.03.03
申请人	SIEMENS BROTHERS & CO. LIMITED;MORRIS REED	发明人
分类号	H03H9/54	主分类号	H03H9/54
代理机构		代理人
主权项
地址

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