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发明名称
Rechenschieber für die Grundschule
摘要
申请公布号
DE29608540(U1)
申请公布日期
1997.11.06
申请号
DE19962008540U
申请日期
1996.05.10
申请人
SARAFIS, ANDREAS, LARISSA, GR
发明人
分类号
G06C1/00;(IPC1-7):G06C1/00
主分类号
G06C1/00
代理机构
代理人
主权项
地址
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