429 / | HD | CHEMISTRY: ELECTRICAL CURRENT PRODUCING APPARATUS, PRODUCT, AND PROCESS |
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122 | DF | CURRENT PRODUCING CELL, ELEMENTS, SUBCOMBINATIONS AND COMPOSITIONS FOR USE THEREWITH AND ADJUNCTS {16} |
129 | DF | .~ Separator, retainer or spacer insulating structure (other than a single porous flat sheet, or either an impregnated or coated sheet not having distinct layers) {4} |
146 | | .~.~ Having electrode spacing projections {1} |
147 | DF | .~.~.~> Projections are deformed portions, of a sheet material, i.e., corrugations, etc. |