297 / | HD | CHAIRS AND SEATS |
105 | DF | DISPLACEABLE BOTTOM EXPOSES SUPPLEMENTAL BODY SUPPORT {4} |
108 | .~ Bottom inverts to form extension of subjacent support {2} | |
109 | DF | .~.~> Plural sections exposed by inverting bottom |
110 | DF | .~.~> Armrest or back inverts with bottom to support extension |