Improvements in broad band amplifiers,申请号GB19380012078-传众专利搜索

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发明名称	Improvements in broad band amplifiers
摘要
申请公布号	GB490656(A)	申请公布日期	1938.08.18
申请号	GB19380012078	申请日期	1938.04.22
申请人	HAZELTINE CORPORATION	发明人
分类号	H03F1/50	主分类号	H03F1/50
代理机构		代理人
主权项
地址

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