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经营范围
发明名称
Lehrgerät für die Primarschule, insbesondere für den Rechenunterricht
摘要
申请公布号
CH418693(A)
申请公布日期
1966.08.15
申请号
CH19640001854
申请日期
1964.02.17
申请人
KLEIN,HEINRICH RUDOLF
发明人
RUDOLF KLEIN,HEINRICH
分类号
G09B19/02
主分类号
G09B19/02
代理机构
代理人
主权项
地址
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