| 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} |
| 209 | DF | .~ Electrode {7} |
| 233 | DF | .~.~ Grid or holder for active material {6} |
| 235 | ![]() | .~.~.~ Having particulate or fibrous porous mass including a sintered mass {2} |
| 236 | DF | .~.~.~.~> Having coating in the pores |
| 237 | DF | .~.~.~.~> Having support or reinforcing member |