发明名称 Book with display-changing device
摘要 A book having at least one fold out page with a display-changing device that allows the user to vary and experiment with the words, pictures or colors associated with the text, representations, characters, objects or scenes depicted in the book.
申请公布号 US2003213151(A1) 申请公布日期 2003.11.20
申请号 US20020145424 申请日期 2002.05.14
申请人 GEMMA EDWARD A. 发明人 GEMMA EDWARD A.
分类号 A63H33/38;G09B17/00;(IPC1-7):G09F11/00;B42D1/00 主分类号 A63H33/38
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