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经营范围
发明名称
Zusammengesetzte Stahlbetonquerschwelle
摘要
申请公布号
DE1061809(B)
申请公布日期
1959.07.23
申请号
DE1957N013534
申请日期
1957.04.13
申请人
N. V. NEDERLANDSE SPANBETON MAATSCHAPPIJ
发明人
分类号
E01B3/36
主分类号
E01B3/36
代理机构
代理人
主权项
地址
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