US PATENT SUBCLASS 204 / 258
.~.~.~.~.~.~ Gas

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  DF  .~.~.~.~.~ With feeding and/or withdrawal means {1}
258.~.~.~.~.~.~ Gas

DEFINITION

Classification: 204/258

(under subclass 257) Electrolytic cells in which the material fed or withdrawn is a gas.

(1) Note. For other cells with gas feeding or withdrawal means, see this class, subclasses 246, 247, 256, 265, 266, 270, 277, and 278.