| 209 / | HD | CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS |
| 509 | DF | SORTING SPECIAL ITEMS, AND CERTAIN METHODS AND APPARATUS (E.G., POCKET TYPE AND LIGHT RESPONSIVE SORTING, ETC.) FOR SORTING ANY ITEMS {11} |
| 552 | DF | .~ Condition responsive means controls separating means {13} |
| 576 | DF | .~.~ Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct thereof {3} |
| 577 | DF | .~.~.~ Infrared, visible light, or ultraviolet {8} |
| 583 | DF | .~.~.~.~ Reading indicia {1} |
| 584 | | .~.~.~.~.~ On mail |