Joint digger and cleaner for concrete pavements,申请号US19480018624-传众专利搜索

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发明名称	Joint digger and cleaner for concrete pavements
摘要
申请公布号	US2541309(A)	申请公布日期	1951.02.13
申请号	US19480018624	申请日期	1948.04.02
申请人	TRAIL ROBERT L	发明人	TRAIL ROBERT L.
分类号	E01C23/09	主分类号	E01C23/09
代理机构		代理人
主权项
地址

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