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经营范围
发明名称
Kuenstliche Eisbahn
摘要
申请公布号
DE573801(C)
申请公布日期
1933.04.06
申请号
DED573801D
申请日期
1930.07.15
申请人
DR.-ING. WALTHER KOENIGER
发明人
分类号
E01C13/10
主分类号
E01C13/10
代理机构
代理人
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