Magnetic sound recorder utilizing varying cathode currents,申请号US19450597780-传众专利搜索

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发明名称	Magnetic sound recorder utilizing varying cathode currents
摘要
申请公布号	US2485539(A)	申请公布日期	1949.10.18
申请号	US19450597780	申请日期	1945.06.06
申请人	IRVING WEISS SHIRLEY	发明人	WEISS SHIRLEY IRVING
分类号	G11B5/00	主分类号	G11B5/00
代理机构		代理人
主权项
地址

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