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发明名称
UNA TRAVIESA DE FERROCARRIL
摘要
申请公布号
ES295751(Y)
申请公布日期
1987.12.01
申请号
ES19510002957U
申请日期
1985.05.23
申请人
BRITISH STEEL CORPORATION
发明人
分类号
E01B3/16;(IPC1-7):E01B23/12
主分类号
E01B3/16
代理机构
代理人
主权项
地址
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