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发明名称
Railway sleeper
摘要
申请公布号
GB9816067(D0)
申请公布日期
1998.09.23
申请号
GB19980016067
申请日期
1998.07.24
申请人
KEEPWELL, MICHAEL J
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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