Radio air raid warning system,申请号US19410404902-传众专利搜索

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发明名称	Radio air raid warning system
摘要
申请公布号	US2344618(A)	申请公布日期	1944.03.21
申请号	US19410404902	申请日期	1941.07.31
申请人	RADIO CORPORATION OF AMERICA	发明人	KOCH WINFIELD R.
分类号	G08B27/00	主分类号	G08B27/00
代理机构		代理人
主权项
地址

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