Circuits à lampes thermioniques et dispositifs de commande du gain de ces circuits,申请号FRD867236-传众专利搜索

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发明名称	Circuits à lampes thermioniques et dispositifs de commande du gain de ces circuits
摘要
申请公布号	FR867236(A)	申请公布日期	1941.10.07
申请号	FRD867236	申请日期	1940.09.19
申请人	LE MATERIEL TELEPHONIQUE, SOCIETE ANONYME	发明人
分类号	H01J43/02;H03G3/22	主分类号	H01J43/02
代理机构		代理人
主权项
地址

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