Time-of-day announcing system,申请号US19430484487-传众专利搜索

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发明名称	Time-of-day announcing system
摘要
申请公布号	US2364147(A)	申请公布日期	1944.12.05
申请号	US19430484487	申请日期	1943.04.24
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	JONES EDWARD H.
分类号	H04M3/487	主分类号	H04M3/487
代理机构		代理人
主权项
地址

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