US PATENT SUBCLASS 204 / 264
.~.~.~.~.~ And filter

Current as of: June, 1999
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204 /   HD   CHEMISTRY: ELECTRICAL AND WAVE ENERGY

193  DF  APPARATUS {5}
194  DF  .~ Electrolytic {11}
242  DF  .~.~ Cells {10}
252  DF  .~.~.~ Diaphragm type {6}
263  DF  .~.~.~.~ With feeding and/or withdrawal means {3}
264.~.~.~.~.~ And filter

DEFINITION

Classification: 204/264

(under subclass 263) Electrolytic cells including a filter as part of the cell.

(1) Note. For cells with filters, see also this class, subclasses 249 and 276.

(2) Note. See this class, subclasses 235, 238 and 240, for filters for the treatment of the electrolyte outside the cell.