An improved method of and means for measuring the modulation of electric currents,申请号GB19320026059-传众专利搜索

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发明名称	An improved method of and means for measuring the modulation of electric currents
摘要
申请公布号	GB392053(A)	申请公布日期	1933.05.11
申请号	GB19320026059	申请日期	1932.09.19
申请人	CYRIL FRANK ELWELL;FREDERICK E. TERMAN	发明人
分类号	G01R29/06	主分类号	G01R29/06
代理机构		代理人
主权项
地址

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