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发明名称
Supporting structure for elevated railway tracks and method of elevating the tracks
摘要
申请公布号
US2160399(A)
申请公布日期
1939.05.30
申请号
US19370151894
申请日期
1937.07.03
申请人
CULBERTSON HOWARD E
发明人
CULBERTSON HOWARD E.
分类号
E01B2/00
主分类号
E01B2/00
代理机构
代理人
主权项
地址
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