Procédé et installations pour alerter les personnes en cas de danger collectif,申请号FRD840137-传众专利搜索

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发明名称	Procédé et installations pour alerter les personnes en cas de danger collectif
摘要
申请公布号	FR840137(A)	申请公布日期	1939.04.19
申请号	FRD840137	申请日期	1938.07.01
申请人		发明人	BE ALVARO, LUIGI, ALESSANDRO, GIUSEPPE;VINCENT ARNOLD
分类号	G08B27/00	主分类号	G08B27/00
代理机构		代理人
主权项
地址

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