MEJORAS EN SISTEMAS TELEFONICOS,申请号ES19380002423-传众专利搜索

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发明名称	MEJORAS EN SISTEMAS TELEFONICOS
摘要
申请公布号	ES242338(A1)	申请公布日期	1958.10.01
申请号	ES19380002423	申请日期	1958.06.10
申请人	STANDARD ELECTRICA, S.A.	发明人
分类号	(IPC1-7):H04M	主分类号	(IPC1-7):H04M
代理机构		代理人
主权项
地址

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