Improvements in or relating to alarm systems,申请号GB19410015892-传众专利搜索

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发明名称	Improvements in or relating to alarm systems
摘要
申请公布号	GB591097(A)	申请公布日期	1947.08.07
申请号	GB19410015892	申请日期	1941.12.09
申请人	TELEFONAKTIEBOLAGET L. M. ERICSSON	发明人
分类号	G08B17/06	主分类号	G08B17/06
代理机构		代理人
主权项
地址

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