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发明名称
RAILROAD SUBSTRUCTURE
摘要
申请公布号
EP0937181(B1)
申请公布日期
2002.03.27
申请号
EP19970945808
申请日期
1997.09.30
申请人
ORTWEIN, HERMANN
发明人
ORTWEIN, HERRMANN;ORTWEIN, ELISABETH
分类号
E01B1/00;E01B9/60;E01B9/62;(IPC1-7):E01B3/00
主分类号
E01B1/00
代理机构
代理人
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