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发明名称
Individueller Programm-Repetitor
摘要
申请公布号
DE1572945(A1)
申请公布日期
1970.03.26
申请号
DE19671572945
申请日期
1967.08.07
申请人
SCHWALBE,DIPL.-VOLKSWIRT HEINZ
发明人
HEINZ SCHWALBE,DIPL.-VOLKSWIRT
分类号
G09B3/04
主分类号
G09B3/04
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