Traffic indicator or marker,申请号US19300486146-传众专利搜索

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发明名称	Traffic indicator or marker
摘要
申请公布号	US1850173(A)	申请公布日期	1932.03.22
申请号	US19300486146	申请日期	1930.10.03
申请人	HORNI PAUL P	发明人	HORNI PAUL P.
分类号	E01F9/06	主分类号	E01F9/06
代理机构		代理人
主权项
地址

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