US PATENT SUBCLASS 429 / 147
.~.~.~ Projections are deformed portions, of a sheet material, i.e., corrugations, etc.

Current as of: June, 1999
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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}
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  DF  .~.~ Having electrode spacing projections {1}
147.~.~.~ Projections are deformed portions, of a sheet material, i.e., corrugations, etc.

DEFINITION

Classification: 429/147

(under subclass 146) Apparatus wherein the projections are portions of the base sheet which have been deformed from the general plane of the base sheet.