Improvements in variable thermionic impedances,申请号GB19420000273-传众专利搜索

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发明名称	Improvements in variable thermionic impedances
摘要
申请公布号	GB553884(A)	申请公布日期	1943.06.09
申请号	GB19420000273	申请日期	1942.01.07
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY, LIMITED	发明人
分类号	H03C3/14;H03G5/26;H03H7/01	主分类号	H03C3/14
代理机构		代理人
主权项
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