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经营范围
发明名称
Eisenbahnschwelle aus vorgespanntem Stahlbeton und Verfahren zu ihrer Herstellung.
摘要
申请公布号
CH308512(A)
申请公布日期
1955.07.31
申请号
CHD308512
申请日期
1951.12.06
申请人
DYCKERHOFF & WIDMANN KOMMANDITGESELLSCHAFT
发明人
KOMMANDITGESELLSCHAFT DYCKERHOFF & WIDMANN
分类号
E01B3/34
主分类号
E01B3/34
代理机构
代理人
主权项
地址
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