| 429 / | HD | CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS |
| 122 | DF | CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS {16} |
| 188 | DF | .~ Include electrolyte chemically specified and method {11} |
| 204 | | .~.~ Sulphuric acid {1} |
| 205 | DF | .~.~.~> Sulphate containing |