Person alerting device,申请号US19460647181-传众专利搜索

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发明名称	Person alerting device
摘要
申请公布号	US2582277(A)	申请公布日期	1952.01.15
申请号	US19460647181	申请日期	1946.02.12
申请人	POWLISON NEIL C	发明人	POWLISON NEIL C.
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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