| http://www.w3.org/ns/prov#value | - -shaped legs hold the tray at a predetermined height above the surface on which the legs are supported; (d) latch means located on the underside of the tray, said latch means including a camming surface associated with each of said U-shaped legs, each of said camming surfaces facing an end of the tray in a position to engage the resiliently bendable bight portion of its associated U-shaped le
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