| 108 / | HD | HORIZONTALLY SUPPORTED PLANAR SURFACES |
| 115 | DF | FOLDING {9} |
| 129 | DF | .~ Legs fold axially parallel to surface edges {2} |
| 131 | ![]() | .~.~ Releasable means holds paired legs in predetermined position {2} |
| 132 | DF | .~.~.~> Legs folded adjacent surface |
| 133 | DF | .~.~.~> Spring biased |