US PATENT SUBCLASS 204 / 278
.~.~.~.~ Gas withdrawal

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}
275  DF  .~.~.~ With feeding and/or withdrawal means {3}
278.~.~.~.~ Gas withdrawal

DEFINITION

Classification: 204/278

(under subclass 275) Electrolytic cells provided with means to withdraw a gas from the cell chamber.

(1) Note. Search also this class, subclasses 247, 256, 258, 266, and 270.