US PATENT SUBCLASS 204 / 257
.~.~.~.~.~ With feeding and/or withdrawal means

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}
253  DF  .~.~.~.~ Plural cells {2}
257.~.~.~.~.~ With feeding and/or withdrawal means {1}
258  DF  .~.~.~.~.~.~> Gas

DEFINITION

Classification: 204/257

(under subclass 253) Electrolytic cells provided with means to feed or withdraw material from the cell chamber.

(1) Note. For other cells with feeding or withdrawal means, see this class, subclasses 245, 255, 263, 269, and 275 and indented subclasses.