297 / | HD | CHAIRS AND SEATS |
423.1 | DF | REST FOR KNEE, LEG, OR FOOT {6} |
423.19 | DF | .~ Connected to chair or seat for relative movement {5} |
423.2 | .~.~ Horizontally slidable from beneath bottom to a position in front of bottom {2} | |
423.21 | DF | .~.~.~> Having a floor-engaging support |
423.22 | DF | .~.~.~> Having additional movement to an operative position {1} |