US PATENT SUBCLASS 429 / 141
.~.~.~.~ Having plural layers of diverse material


Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use



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}
131  DF  .~.~ Having electrode enclosing feature {4}
140  DF  .~.~.~ Tubular type {1}
141.~.~.~.~ Having plural layers of diverse material


DEFINITION

Classification: 429/141

(under subclass 140) Apparatus wherein the tubular structure is composed of multiple laminae, at least two of which are from different materials.