Pulse amplitude modulation communication system,申请号US19470759422-传众专利搜索

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发明名称	Pulse amplitude modulation communication system
摘要
申请公布号	US2589617(A)	申请公布日期	1952.03.18
申请号	US19470759422	申请日期	1947.07.07
申请人	KOWALSKI ALFRED C	发明人	KOWALSKI ALFRED C.
分类号	H04B1/66;H04J3/00;H04N7/12	主分类号	H04B1/66
代理机构		代理人
主权项
地址

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