| 204 / | HD | CHEMISTRY: ELECTRICAL AND WAVE ENERGY |
| 193 | DF | APPARATUS {5} |
| 194 | DF | .~ Electrolytic {11} |
| * | DD | .~.~ With movable electrode means {7} |
| 198 | DF | .~.~.~ Work conveyer {2} |
| 202 | | .~.~.~.~ Endless {2} |
| 203 | DF | .~.~.~.~.~> With base treatment {1} |
| 205 | DF | .~.~.~.~.~> With current control |