Устройство для наблюдения за устойчивостью действия дуплексных многократных телеграфных аппаратов,申请号SUD55665-传众专利搜索

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发明名称	Устройство для наблюдения за устойчивостью действия дуплексных многократных телеграфных аппаратов
摘要
申请公布号	SU55665(A1)	申请公布日期	1939.11.30
申请号	SUD55665	申请日期	1938.12.13
申请人	ZHUCHKOV V.K.	发明人	ZHUCHKOV V.K.
分类号	H04L25/06;H04L13/02	主分类号	H04L25/06
代理机构		代理人
主权项
地址

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