Perfectionnements aux amplificateurs thermoioniques,申请号FRD752995-传众专利搜索

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发明名称	Perfectionnements aux amplificateurs thermoioniques
摘要
申请公布号	FR752995(A)	申请公布日期	1933.10.04
申请号	FRD752995	申请日期	1933.03.22
申请人	MARCONI'S WIRELESS TELEGRAPH COMPANY LIMITED	发明人
分类号	H03F3/02;H03F3/32	主分类号	H03F3/02
代理机构		代理人
主权项
地址

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