Perfectionnement aux lampes amplificatrices à ondes progressives avec champ magnétique transversal,申请号FRD991909-传众专利搜索

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发明名称	Perfectionnement aux lampes amplificatrices à ondes progressives avec champ magnétique transversal
摘要
申请公布号	FR991909(A)	申请公布日期	1951.10.11
申请号	FRD991909	申请日期	1949.05.24
申请人	COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL	发明人
分类号	H01J25/44	主分类号	H01J25/44
代理机构		代理人
主权项
地址

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