Pulse width modulation multichannel transmitting system,申请号US19440539856-传众专利搜索

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发明名称	Pulse width modulation multichannel transmitting system
摘要
申请公布号	US2424977(A)	申请公布日期	1947.08.05
申请号	US19440539856	申请日期	1944.06.12
申请人	FEDERAL TELEPHONE AND RADIO CORPORATION	发明人	GRIEG DONALD D.
分类号	H04J3/00;H04J3/08	主分类号	H04J3/00
代理机构		代理人
主权项
地址

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