Tube électronique pour fréquences très élevées,申请号FRD940052-传众专利搜索

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发明名称	Tube électronique pour fréquences très élevées
摘要
申请公布号	FR940052(A)	申请公布日期	1948.12.02
申请号	FRD940052	申请日期	1947.01.08
申请人	COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL	发明人
分类号	H01J25/36	主分类号	H01J25/36
代理机构		代理人
主权项
地址

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