62 / | HD | REFRIGERATION |
404 | DF | GAS CONTROLLER OR DIRECTOR {5} |
407 | DF | .~ Cooled gas directed relative to cooled enclosure {7} |
420 | .~.~ Directed relative to ice container {2} | |
421 | DF | .~.~.~> Foraminous wall or bottom ice container {1} |
424 | DF | .~.~.~> Gas flow passage means under ice container |