| 204 / | HD | CHEMISTRY: ELECTRICAL AND WAVE ENERGY |
| 193 | DF | APPARATUS {5} |
| 194 | DF | .~ Electrolytic {11} |
| 279 | DF | .~.~ Elements {3} |
| 297 R | ![]() | .~.~.~ Electrode supports and work holders {2} |
| 297 M | DF | .~.~.~.~> Workpiece held by magnetism or suction |
| 297 W | DF | .~.~.~.~> Workpiece rack |