Traffic control signaling device,申请号US19510253418-传众专利搜索

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发明名称	Traffic control signaling device
摘要
申请公布号	US2684046(A)	申请公布日期	1954.07.20
申请号	US19510253418	申请日期	1951.10.26
申请人	DUNN DAVID O	发明人	DUNN DAVID O.
分类号	B60Q1/50	主分类号	B60Q1/50
代理机构		代理人
主权项
地址

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