ANTI-CLOGGING ENTRANCE GUARD FOR CULVERTS,申请号USD3472030-传众专利搜索

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发明名称	ANTI-CLOGGING ENTRANCE GUARD FOR CULVERTS
摘要
申请公布号	US3472030(A)	申请公布日期	1969.10.14
申请号	USD3472030	申请日期	1968.02.16
申请人	RAY E. RIEKE	发明人	RAY E. RIEKE
分类号	E01F5/00;E02B11/00;(IPC1-7):E02B5/08;E02B8/02;F16L55/00	主分类号	E01F5/00
代理机构		代理人
主权项
地址

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