Distortion measuring device for telegraph systems,申请号US19360079780-传众专利搜索

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发明名称	Distortion measuring device for telegraph systems
摘要
申请公布号	US2094701(A)	申请公布日期	1937.10.05
申请号	US19360079780	申请日期	1936.05.14
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY	发明人	HARMS GORDON J.
分类号	H04L12/26;H04L25/04	主分类号	H04L12/26
代理机构		代理人
主权项
地址

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