Three-element carrier code arrangement,申请号US19380213059-传众专利搜索

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发明名称	Three-element carrier code arrangement
摘要
申请公布号	US2232912(A)	申请公布日期	1941.02.25
申请号	US19380213059	申请日期	1938.06.10
申请人	AMERICAN TELEPHONE AND TELEGRAPH COMPANY	发明人	HANLEY FRANK HAROLD
分类号	H04L27/02	主分类号	H04L27/02
代理机构		代理人
主权项
地址

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