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经营范围
发明名称
Steel railroad sleepers
摘要
申请公布号
OA11104(A)
申请公布日期
2003.03.17
申请号
OA19999900044
申请日期
1999.02.26
申请人
BRITISH STEEL PLC.
发明人
KERRY HILL;SIDNEY RELPH
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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