| http://www.w3.org/ns/prov#value | - ition, in which position the two U-shaped legs hold the tray at a predetermined height above the surface on which the legs are supported; and (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 bight portion of its associ
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