Installation téléphonique permettant la jonction simultanée de plusieurs lignes à une même station.,申请号CHD214506-传众专利搜索

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发明名称	Installation téléphonique permettant la jonction simultanée de plusieurs lignes à une même station.
摘要
申请公布号	CH214506(A)	申请公布日期	1941.04.30
申请号	CHD214506	申请日期	1938.12.20
申请人	CRETI,MARCELLO	发明人	CRETI,MARCELLO
分类号	H04M3/56	主分类号	H04M3/56
代理机构		代理人
主权项
地址

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