Emergency road signal,申请号US19470768220-传众专利搜索

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发明名称	Emergency road signal
摘要
申请公布号	US2557859(A)	申请公布日期	1951.06.19
申请号	US19470768220	申请日期	1947.08.12
申请人	HARRY BERNSTEIN	发明人	BERNSTEIN HARRY
分类号	B60Q7/00;G08B5/38;G09F13/16	主分类号	B60Q7/00
代理机构		代理人
主权项
地址

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