Improvements in superheterodyne radio-receiving apparatus,申请号GB19480009507-传众专利搜索

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发明名称	Improvements in superheterodyne radio-receiving apparatus
摘要
申请公布号	GB639966(A)	申请公布日期	1950.07.12
申请号	GB19480009507	申请日期	1948.04.05
申请人	PHILIPS ELECTRICAL LIMITED	发明人
分类号	H03F1/54;H04B1/26	主分类号	H03F1/54
代理机构		代理人
主权项
地址

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