Телефонный коммутатор системы центральной батареи,申请号SU19560557217-传众专利搜索

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发明名称	Телефонный коммутатор системы центральной батареи
摘要
申请公布号	SU109995(A1)	申请公布日期	1956.11.30
申请号	SU19560557217	申请日期	1956.09.06
申请人	FINKLER I.E.	发明人	FINKLER I.E.
分类号	H04B1/48;H04Q3/58	主分类号	H04B1/48
代理机构		代理人
主权项
地址

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