Коммутационное устройство для многопрограммного вещания по абонентским линиям машинных АТС,申请号SU19380000806-传众专利搜索

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发明名称	Коммутационное устройство для многопрограммного вещания по абонентским линиям машинных АТС
摘要
申请公布号	SU57445(A1)	申请公布日期	1939.11.30
申请号	SU19380000806	申请日期	1938.02.01
申请人	FNNKLER I.E.	发明人	FNNKLER I.E.
分类号		主分类号
代理机构		代理人
主权项
地址

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