Tube à décharges à cathode de mercure,申请号FRD823981-传众专利搜索

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发明名称	Tube à décharges à cathode de mercure
摘要
申请公布号	FR823981(A)	申请公布日期	1938.01.29
申请号	FRD823981	申请日期	1937.07.06
申请人	N. V. PHILIPS' GLOEILAMPENFABRIEKEN	发明人
分类号	B21B39/00;B65H3/08;H01J13/12	主分类号	B21B39/00
代理机构		代理人
主权项
地址

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