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发明名称
Holzschwelle mit Hartholzeinsaetzen an den Schienenauflagerstellen
摘要
申请公布号
DE531161(C)
申请公布日期
1931.08.07
申请号
DED531161D
申请日期
申请人
WERNER LESSER
发明人
分类号
E01B9/16
主分类号
E01B9/16
代理机构
代理人
主权项
地址
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