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经营范围
发明名称
STEEL RAILROAD SLEEPERS
摘要
申请公布号
EP0922142(A1)
申请公布日期
1999.06.16
申请号
EP19970937720
申请日期
1997.08.27
申请人
BRITISH STEEL PLC
发明人
HILL, KERRY;RELPH, SIDNEY
分类号
E01B3/16;E01B9/34;(IPC1-7):E01B3/16
主分类号
E01B3/16
代理机构
代理人
主权项
地址
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