Circuit amplificateur à lampe thermionique,申请号FRD942845-传众专利搜索

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发明名称	Circuit amplificateur à lampe thermionique
摘要
申请公布号	FR942845(A)	申请公布日期	1949.02.18
申请号	FRD942845	申请日期	1946.08.13
申请人	ELECTRIC & MUSICAL INDUSTRIES LIMITED	发明人
分类号	H03C1/16;H03F3/32;H03F3/44	主分类号	H03C1/16
代理机构		代理人
主权项
地址

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