Elektrisk udladningsrør til frembringelse eller forstærkning af elektriske svingninger.,申请号DK19400000239-传众专利搜索

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发明名称	Elektrisk udladningsrør til frembringelse eller forstærkning af elektriske svingninger.
摘要
申请公布号	DK77638(C)	申请公布日期	1954.06.08
申请号	DK19400000239	申请日期	1940.02.01
申请人	RADIO CORPORATION OF AMERICA	发明人
分类号		主分类号
代理机构		代理人
主权项
地址

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