Improvements in or relating to thermionic valve amplifiers,申请号GB19290001864-传众专利搜索

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发明名称	Improvements in or relating to thermionic valve amplifiers
摘要
申请公布号	GB326922(A)	申请公布日期	1930.03.27
申请号	GB19290001864	申请日期	1929.01.18
申请人	PHILIP KESTON TURNER	发明人
分类号	H03F3/32;H03F3/44	主分类号	H03F3/32
代理机构		代理人
主权项
地址

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