| 422 / | HD | CHEMICAL APPARATUS AND PROCESS DISINFECTING, DEODORIZING, PRESERVING, OR STERILIZING |
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| 129 | DF | CHEMICAL REACTOR {28} |
| 188 | DF | .~ Including plural reaction stages {2} |
| 189 | DF | .~.~ And means providing discrete sequential reaction stages; e.g., train, etc. {2} |
| 193 | DF | .~.~.~ Reaction stages located within single reaction chamber {2} |
| 194 |  | .~.~.~.~ And means downstream of a stage for internally injecting a reactant into a reaction stream for interreaction in a subsequent stage, or injecting an internal quench stream into reaction stream passing between stages |