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发明名称
Educational puzzle
摘要
申请公布号
US1752248(A)
申请公布日期
1930.03.25
申请号
US19290356433
申请日期
1929.04.19
申请人
EDWARD FRANSEN JOHN
发明人
FRANSEN JOHN EDWARD
分类号
A63F9/00;A63F9/10
主分类号
A63F9/00
代理机构
代理人
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地址
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