Dispositif d'émission et de réception de signaux acoustiques applicable aux trains routfers,申请号FRD837510-传众专利搜索

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发明名称	Dispositif d'émission et de réception de signaux acoustiques applicable aux trains routfers
摘要
申请公布号	FR837510(A)	申请公布日期	1939.02.13
申请号	FRD837510	申请日期	1938.02.04
申请人		发明人	CAPRARA GIUSEPPE;FENARI ANGELO
分类号	G08B3/10	主分类号	G08B3/10
代理机构		代理人
主权项
地址

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