| 摘要 |
PROBLEM TO BE SOLVED: To provide a pair of roller skates enabling a user to walk as well as enjoying roller-skating in the same way as usual roller-skating. SOLUTION: The roller skate has at least a front wheel switchable between both positions of a use position and a raised position, thereby enabling the user not only to walk in the raised position but enjoy roller-skating in the same way as usual roller-skating in the using position. COPYRIGHT: (C)2006,JPO&NCIPI
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