| 摘要 |
Folding step stool comprising a pair of substantially "U"-shaped tubular frames (1,3) supporting a plurality of steps (4) and hinged to each other, the rear frame (3) being provided at its upper ends with a pair of forks (13), preferably realised in rigid or semi-rigid plastic, so that, when the step stool is open, the user can insert by pressure into the front frame (1) said forks which allow to lock the step stool, thereby avoiding its accidental closure. <IMAGE>
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