| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of low convenience for a user of a memorization card. SOLUTION: The card holder includes a square bottom plate, a sidewall which is erected in each of a pair of opposing sides of the bottom plate, and a frame plate which is protruded from the upper end of each sidewall in parallel to the bottom plate to cover the upper part of the bottom plate located near each sidewall. On both edge sides of each sidewall, an insertion opening is formed, through which the card can be inserted into and pulled from a space surrounded with the bottom plate, each sidewall, and each frame plate. One of the insertion opening includes a partition plate for partitioning a section between the bottom plate and each frame plate into a plurality of sections to be in parallel with the bottom plate. COPYRIGHT: (C)2011,JPO&INPIT
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