| 34 / | HD | DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS |
| 523 | DF | APPARATUS {40} |
| 524 | DF | .~ With automatic control {11} |
| 526 | DF | .~.~ Of plural operations {3} |
| 535 | DF | .~.~.~ Having two of heater, contacting gas humidity, or gas mixing {7} |
| 540 | ![]() | .~.~.~.~ Having plural compartments |