发明名称 Book with pages containing apertures that superimpose images
摘要 This invention relates to a book for young readers which contains pages with apertures cut therein, such that the apertures are capable of superimposing images affixed to the front and rear covers.
申请公布号 US5031935(A) 申请公布日期 1991.07.16
申请号 US19890413320 申请日期 1989.09.27
申请人 D'ANDREA, DEBORAH B. 发明人 D'ANDREA, DEBORAH B.
分类号 A63H33/38;B42D1/00 主分类号 A63H33/38
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