Improvements in or relating to the combination of identification means with means for operating audible electric signals,申请号GB19470011386-传众专利搜索

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发明名称	Improvements in or relating to the combination of identification means with means for operating audible electric signals
摘要
申请公布号	GB623310(A)	申请公布日期	1949.05.16
申请号	GB19470011386	申请日期	1947.04.29
申请人	JAMES ERNEST JONES;HAROLD WALTER WORTH	发明人
分类号	G08B7/06	主分类号	G08B7/06
代理机构		代理人
主权项
地址

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