Teletypewriter switching system,申请号US19390262681-传众专利搜索

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发明名称	Teletypewriter switching system
摘要
申请公布号	US2249429(A)	申请公布日期	1941.07.15
申请号	US19390262681	申请日期	1939.03.18
申请人	BELL TELEPHONE LABORATORIES, INCORPORATED	发明人	KINKEAD FULLERTON S.
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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