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经营范围
发明名称
Railroad bed cleaning machine
摘要
申请公布号
US2921636(A)
申请公布日期
1960.01.19
申请号
US19560641787
申请日期
1956.10.29
申请人
HELMUT ANDRES;VON HAYN ERNST;EDUARD ROEMERT
发明人
ANDRES HELMUT;HAYN ERNST VON;ROEMERT EDUARD
分类号
E01B27/10
主分类号
E01B27/10
代理机构
代理人
主权项
地址
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