| 摘要 |
PROBLEM TO BE SOLVED: To provide a book stand by which an opened page can be completely pressed and a magnet can easily be moved upon turning over a page. SOLUTION: Two magnets with an attraction force of 0.8 kg are attracted on the surface of an iron plate to completely press an opened page of a book and can be easily released from the iron plate. COPYRIGHT: (C)2005,JPO&NCIPI
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