Устройство пробных (стопорных) цепей АТС,申请号SU19400318175-传众专利搜索

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发明名称	Устройство пробных (стопорных) цепей АТС
摘要
申请公布号	SU62731(A1)	申请公布日期	1942.11.30
申请号	SU19400318175	申请日期	1940.11.12
申请人	KHANIN G.B.	发明人	KHANIN G.B.
分类号	H04M3/00	主分类号	H04M3/00
代理机构		代理人
主权项
地址

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