297 / | HD | CHAIRS AND SEATS |
311 | DF | MOVABLE BOTTOM {5} |
313 | DF | .~ Tiltable {5} |
325 | DF | .~.~ Bottom and back tiltable as unit {2} |
326 | DF | .~.~.~ About stationary horizontal pivot {1} |
327 | DF | .~.~.~.~ To plural use positions {1} |
328 | .~.~.~.~.~ With set means horizontally spaced from pivot |