PULSE MODULATION SOUND RECORDING SYSTEMS,申请号CAD477255-传众专利搜索

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发明名称	PULSE MODULATION SOUND RECORDING SYSTEMS
摘要
申请公布号	CA477255(A)	申请公布日期	1951.09.25
申请号	CAD477255	申请日期
申请人	FEDERAL TELEPHONE AND RADIO CORPORATION	发明人	GERARD JULES LEHMANN;NORMAN HUGH YOUNG, JR.
分类号		主分类号
代理机构		代理人
主权项
地址

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