Street-traffic marker,申请号US19300480777-传众专利搜索

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发明名称	Street-traffic marker
摘要
申请公布号	US1789525(A)	申请公布日期	1931.01.20
申请号	US19300480777	申请日期	1930.09.09
申请人	HOFF ADAM F	发明人	HOFF ADAM F.
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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