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发明名称
Ballast cleaning machine
摘要
申请公布号
US2196880(A)
申请公布日期
1940.04.09
申请号
US19380183147
申请日期
1938.01.03
申请人
THE BUCKEYE TRACTION DITCHER COMPANY
发明人
VOORHIS WILLIAM G. VAN;CRABIEL CHARLES A.
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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