Perfectionnements aux systèmes de signalisation électriques,申请号FRD1019689-传众专利搜索

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发明名称	Perfectionnements aux systèmes de signalisation électriques
摘要
申请公布号	FR1019689(A)	申请公布日期	1953.01.26
申请号	FRD1019689	申请日期	1950.04.28
申请人	LE MATERIEL TELEPHONIQUE	发明人	BESSONNET AUGUSTE-JEAN-RENE;SILERME FERNAND
分类号	H04Q1/39	主分类号	H04Q1/39
代理机构		代理人
主权项
地址

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