| 250 / | HD | RADIANT ENERGY |
| 428 | DF | FLUENT MATERIAL CONTAINMENT, SUPPORT OR TRANSFER MEANS {4} |
| 432 R | ![]() | .~ With irradiating source or radiating fluent material {4} |
| 433 | DF | .~.~> Including a movable surface transfer means |
| 434 | DF | .~.~> Including a gravity-type transfer means |
| 435 | DF | .~.~> Including a flowthrough transfer means {3} |
| 432 PD | DF | .~.~> Parent-daughter isotope separators |