ELECTRON TUBE EXHIBITING A SLIGHT SECONDARY ANODE-EMISSION,申请号CAD507227-传众专利搜索

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发明名称	ELECTRON TUBE EXHIBITING A SLIGHT SECONDARY ANODE-EMISSION
摘要
申请公布号	CA507227(A)	申请公布日期	1954.11.09
申请号	CAD507227	申请日期
申请人	N.V. PHILIPS GLOEILAMPENFABRIEKEN	发明人	JOHAN L. H. JONKER
分类号		主分类号
代理机构		代理人
主权项
地址

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