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发明名称
Grooved rail frog and method of production thereof
摘要
申请公布号
HK1042733(A1)
申请公布日期
2006.03.10
申请号
HK20020102531
申请日期
2002.04.04
申请人
BWG GMBH & CO. KG.
发明人
THOMAS CHRIST;GERHARD RATZ
分类号
E01B7/12;(IPC1-7):E01B
主分类号
E01B7/12
代理机构
代理人
主权项
地址
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