| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 243 | DF | PHYSICAL TYPE APPARATUS {8} |
| 255 | DF | .~ Means separating or dissolving a material constituent {3} |
| 285 | | .~.~ And heating means {2} |
| 286 | DF | .~.~.~> Including mechanical comminuting or conveying means {1} |
| 288 | DF | .~.~.~> Including means removing vapor from treated material {2} |