High frequency signaling system,申请号US19350045512-传众专利搜索

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发明名称	High frequency signaling system
摘要
申请公布号	US2051529(A)	申请公布日期	1936.08.18
申请号	US19350045512	申请日期	1935.10.17
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY	发明人	NYQUIST HARRY
分类号	H04B3/40	主分类号	H04B3/40
代理机构		代理人
主权项
地址

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