Perfectionnements aux générateurs d'oscillations électriques utilisant des tubes à vide,申请号FRD700498-传众专利搜索

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发明名称	Perfectionnements aux générateurs d'oscillations électriques utilisant des tubes à vide
摘要
申请公布号	FR700498(A)	申请公布日期	1931.03.02
申请号	FRD700498	申请日期	1929.11.23
申请人		发明人	DAVID PIERRE-BERNARD-FRANC
分类号	H03B5/10	主分类号	H03B5/10
代理机构		代理人
主权项
地址

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