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发明名称
Lehrmittel zur Darstellung des Sternhimmels
摘要
申请公布号
DE577897(C)
申请公布日期
1933.06.06
申请号
DENDATC045033D
申请日期
申请人
DR. HANS CASSEBAUM;ERNST NACHTIGALL
发明人
分类号
G09B27/06
主分类号
G09B27/06
代理机构
代理人
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