Hand-operated portable traffic signal light,申请号US19530363421-传众专利搜索

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发明名称	Hand-operated portable traffic signal light
摘要
申请公布号	US2751581(A)	申请公布日期	1956.06.19
申请号	US19530363421	申请日期	1953.06.22
申请人	WALTMAN DALLAS H	发明人	WALTMAN DALLAS H.
分类号	G08G1/0955	主分类号	G08G1/0955
代理机构		代理人
主权项
地址

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