Installation de télécommunication et appareils de signalisation à distance pour locaux présentant un danger d'explosion,申请号FRD1119139-传众专利搜索

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发明名称	Installation de télécommunication et appareils de signalisation à distance pour locaux présentant un danger d'explosion
摘要
申请公布号	FR1119139(A)	申请公布日期	1956.06.15
申请号	FRD1119139	申请日期	1955.02.15
申请人	FERNSPRECH- UND SIGNALBAU LEHNER & CO. K. G.	发明人
分类号	H04M1/18;H04M9/00	主分类号	H04M1/18
代理机构		代理人
主权项
地址

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