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发明名称
Einrichtung zum UEberpruefen des selbstaendigen Loesens von schriftlichen Aufgaben
摘要
申请公布号
DE1215971(B)
申请公布日期
1966.05.05
申请号
DE1963SC33013
申请日期
1963.03.26
申请人
WILHELM SCHIFFGENS
发明人
SCHIFFGENS WILHELM
分类号
G09B3/04
主分类号
G09B3/04
代理机构
代理人
主权项
地址
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