| 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 | DF | .~.~ And heating means {2} |
| 288 | ![]() | .~.~.~ Including means removing vapor from treated material {2} |
| 289 | DF | .~.~.~.~> And direct contact heating fluid means within separating or dissolving chamber vessel |
| 290 | DF | .~.~.~.~> And indirect contact heating fluid means in separating or dissolving chamber |