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} |
149 | DF | .~ Plural cells {5} |
152 | .~.~ Individual cells connected in repeating contiguous layered units {1} | |
153 | DF | .~.~.~> Having unit enclosing housing {1} |