| 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} |
| 247 | DF | .~ Separator, retainer, spacer or materials for use therewith {2} |
| 249 | | .~.~ Organic material {5} |
| 250 | DF | .~.~.~> And wetting agent or surface acting agent |
| 251 | DF | .~.~.~> And inorganic material {1} |
| 253 | DF | .~.~.~> Phenolic or thermosetting resin |
| 254 | DF | .~.~.~> Rubber or thermoplastic resin |
| 255 | DF | .~.~.~> Natural or treated plant materials |