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经营范围
发明名称
EDUCATIONAL COMPUTER
摘要
申请公布号
US3568335(A)
申请公布日期
1971.03.09
申请号
USD3568335
申请日期
1968.10.28
申请人
FRANCKH'SCHE VERLAGSHANDLUNG W. KELLER & CO.
发明人
EUCHAR R. NEHMANN;JOACHIM WEIMER
分类号
A63F9/18;G09B23/18;(IPC1-7):G09B5/00
主分类号
A63F9/18
代理机构
代理人
主权项
地址
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