Improvements in radio receiving and frequency conversion systems,申请号GB19470033628-传众专利搜索

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发明名称	Improvements in radio receiving and frequency conversion systems
摘要
申请公布号	GB643902(A)	申请公布日期	1950.09.27
申请号	GB19470033628	申请日期	1947.12.19
申请人	COLLINS RADIO COMPANY	发明人
分类号	H03B21/02;H03J7/04;H04B1/26	主分类号	H03B21/02
代理机构		代理人
主权项
地址

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