| 429 / | HD | CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS |
| 12 | DF | FUEL CELL, SUBCOMBINATION THEREOF OR METHODS OF OPERATING {10} |
| 13 | ![]() | .~ Process of operating {3} |
| 14 | DF | .~.~> Circulating or feeding electrolyte {1} |
| 16 | DF | .~.~> Fused or molten electrolyte |
| 17 | DF | .~.~> Generating, regenerating or recycling reactant |