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发明名称
Lern- und Unterhaltungsgerät
摘要
申请公布号
CH373908(A)
申请公布日期
1963.12.15
申请号
CH19590078586
申请日期
1959.09.22
申请人
HALLER,BRUNO
发明人
HALLER,BRUNO
分类号
G09B19/02
主分类号
G09B19/02
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