| 204 / | HD | CHEMISTRY: ELECTRICAL AND WAVE ENERGY |
|
| 193 | DF | APPARATUS {5} |
| 194 |  | .~ Electrolytic {11} |
| 400 | DF | .~.~> Analysis and testing {20} |
| 196.01 | DF | .~.~> Object protection {15} |
| * | DD | .~.~> With movable electrode means {7} |
| 227 | DF | .~.~> Cells with base treatment means |
| 228.1 | DF | .~.~> With current, voltage, or power control means responsive to sensed condition {8} |
| 229.4 | DF | .~.~> With programmed, cyclic, or time responsive current, voltage, or power control means {3} |
| 229.8 | DF | .~.~> With means for measuring, testing, or sensing current, voltage, or power {1} |
| 230.2 | DF | .~.~> With current, voltage, or power control means {6} |
| 232 | DF | .~.~> Cells with electrolyte treatment means {4} |
| 242 | DF | .~.~> Cells {10} |
| 279 | DF | .~.~> Elements {3} |