108 / | HD | HORIZONTALLY SUPPORTED PLANAR SURFACES |
59 | DF | PLURAL RELATED HORIZONTAL SURFACES {11} |
65 | DF | .~ Coplanar extension surface {4} |
69 | DF | .~.~ End leaf {4} |
71 | DF | .~.~.~ Elevating mechanism {2} |
73 | .~.~.~.~ Cam and slide {2} | |
74 | DF | .~.~.~.~.~> Also moves principal surface |
75 | DF | .~.~.~.~.~> Cam slot |