发明名称 PAGE WEIGHT
摘要 A device for holding open the pages of a book comprises a transparent band with two endpieces attached to the distal ends of the band. The endpieces' weight holds the band downward across the book. The device acts as a strap that lies over an open book. The device holds open the pages of a book in a simple fashion.
申请公布号 CA2069292(A1) 申请公布日期 1993.11.23
申请号 CA19922069292 申请日期 1992.05.22
申请人 DRUZIN, BRYAN H. 发明人 DRUZIN, BRYAN H.
分类号 B42D9/00;(IPC1-7):B42D9/00 主分类号 B42D9/00
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