Arrangement for increasing the selectivity of electric amplifying apparatus,申请号GB19370035379-传众专利搜索

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发明名称	Arrangement for increasing the selectivity of electric amplifying apparatus
摘要
申请公布号	GB513626(A)	申请公布日期	1939.10.18
申请号	GB19370035379	申请日期	1937.12.21
申请人	LADISLAS DE KRAMOLIN	发明人
分类号	H01J21/02;H03B5/10;H03C1/22;H03D7/08;H03D7/18;H03F1/36;H03F3/52;H03H7/01;H04B1/16;H04B1/26;H05K9/00	主分类号	H01J21/02
代理机构		代理人
主权项
地址

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