| 392 / | HD | ELECTRIC RESISTANCE HEATING DEVICES |
|
| * |  | HEATING DEVICES (CLASS 219 SUBCLASS 200) {11} |
| 301 | DF | .~> Borehole type {5} |
| 307 | DF | .~> Combined with nonelectric heating means (e.g., gas, etc.) {3} |
| 311 | DF | .~> Fluid-in-circuit type heater {6} |
| 339 | DF | .~> With heat storage means {7} |
| 347 | DF | .~> Convection space heater {10} |
| 379 | DF | .~> Concentrated heated air stream (i.e., blast) {3} |
| 386 | DF | .~> Vaporizer {7} |
| 407 | DF | .~> Radiant heater {10} |
| 441 | DF | .~> Tank or container type liquid heater {4} |
| 465 | DF | .~> Continuous flow type fluid heater {12} |
| 497 | DF | .~> Immersion heater details {6} |