Teletypewriter trunking system,申请号US19360093806-传众专利搜索

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发明名称	Teletypewriter trunking system
摘要
申请公布号	US2158113(A)	申请公布日期	1939.05.16
申请号	US19360093806	申请日期	1936.08.01
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	FITCH KARL F.
分类号	H04L12/04	主分类号	H04L12/04
代理机构		代理人
主权项
地址

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