108 / | HD | HORIZONTALLY SUPPORTED PLANAR SURFACES |
59 | DF | PLURAL RELATED HORIZONTAL SURFACES {11} |
162 | DF | .~ Foldable component {6} |
166 | DF | .~.~ Hinged horizontal surfaces {3} |
173 | DF | .~.~.~ Leg and surface sections collapse concurrently {2} |
174 | .~.~.~.~ Leg collapses between surface sections |