| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an innovative ladder having an extremely high marketability. Ž<P>SOLUTION: The ladder has a plurality of lateral members 2 between a pair of vertical members 1. At least the lateral member 2 among the lateral members 2, which becomes the top rung, has one end pivoted to one of the vertical member 1 while another end is detachably connected to another vertical member 1. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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