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发明名称
Screening assembly for screening and returning railway ballast and rail set off means therefor
摘要
申请公布号
US2854930(A)
申请公布日期
1958.10.07
申请号
US19530355039
申请日期
1953.05.14
申请人
NORDBERG MANUFACTURING COMPANY
发明人
TALBOYS HENRY H.
分类号
E01B27/06;E01B27/10
主分类号
E01B27/06
代理机构
代理人
主权项
地址
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