Safety replacement cover for catch basins,申请号US19490096732-传众专利搜索

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发明名称	Safety replacement cover for catch basins
摘要
申请公布号	US2576353(A)	申请公布日期	1951.11.27
申请号	US19490096732	申请日期	1949.06.02
申请人	WALTER NELSON OSCAR	发明人	NELSON OSCAR WALTER
分类号	E03F5/02	主分类号	E03F5/02
代理机构		代理人
主权项
地址

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