Perfectionnements aux tubes électroniques à modulation de vitesse,申请号FRD972003-传众专利搜索

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发明名称	Perfectionnements aux tubes électroniques à modulation de vitesse
摘要
申请公布号	FR972003(A)	申请公布日期	1951.01.24
申请号	FRD972003	申请日期	1940.12.18
申请人	COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL	发明人
分类号	H01J25/12	主分类号	H01J25/12
代理机构		代理人
主权项
地址

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