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发明名称
Magic writing toy
摘要
申请公布号
US3061948(A)
申请公布日期
1962.11.06
申请号
US19610100627
申请日期
1961.04.04
申请人
KOHNER BROS., INC.
发明人
STUBBMANN ALBERT
分类号
A63H37/00;B43L1/12;B43L13/10;G09B1/00
主分类号
A63H37/00
代理机构
代理人
主权项
地址
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