(57) A ladder including first and second leg elements, a plurality of treads, and pivot
means coupling the plurality of treads to each of the leg elements for selectable
pivoting from an operative orientation, wherein the longitudinal axes of the treads
are perpendicular to the longitudinal axes of the leg elements, to a collapsed orientation,
wherein the longitudinal axes of the treads are parallel to the longitudinal axes
of the leg elements, the first leg element being arranged for selectable slideable
motion with respect to the treads and the second leg element.
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