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发明名称
Eisenbahnoberbau mit eisernen, auf Betonklötzen ruhenden Querschwellen
摘要
申请公布号
AT171837(B)
申请公布日期
1952.07.10
申请号
ATD171837
申请日期
1948.11.24
申请人
ING. FRANZ HEJLEK
发明人
ING. FRANZ HEJLEK
分类号
主分类号
代理机构
代理人
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