| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
| 243 | DF | PHYSICAL TYPE APPARATUS {8} |
| 292 | DF | .~ Apparatus for treating solid article or material with fluid chemical {4} |
| 295 | DF | .~.~ Including pressure treating chamber (above ambient) {3} |
| 298 | DF | .~.~.~ And vaporizer; e.g., boiler, etc. {1} |
| 299 | | .~.~.~.~ Constituting treating chamber |