| 297 / | HD | CHAIRS AND SEATS | 
| 250.1 | DF | SUPPLEMENTAL SEAT (E.G., CHILD SEAT, ETC.) {8} | 
| 256.1 |  | .~ Adjustable to plural operative positions {4} | 
| 256.11 | DF | .~.~> Vertically | 
| 256.12 | DF | .~.~> About a vertical axis; i.e., rotates | 
| 256.13 | DF | .~.~> Tiltable | 
| 256.14 | DF | .~.~> Reversible |