Perfectionnements aux dispositifs d'alarme, d'appel et analogues, actionnés par des signaux,申请号FRD851055-传众专利搜索

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发明名称	Perfectionnements aux dispositifs d'alarme, d'appel et analogues, actionnés par des signaux
摘要
申请公布号	FR851055(A)	申请公布日期	1940.01.02
申请号	FRD851055	申请日期	1939.03.02
申请人	MARCONIS WIRELESS TELEGRAPH COMPANY LTD	发明人
分类号	H04Q1/44	主分类号	H04Q1/44
代理机构		代理人
主权项
地址

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