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发明名称
Lehrmittel in Form eines Bauspielzeuges.
摘要
申请公布号
AT146740(B)
申请公布日期
1936.08.10
申请号
ATD146740
申请日期
1935.05.14
申请人
ROBERT FIEBER
发明人
ROBERT FIEBER
分类号
主分类号
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