US PATENT SUBCLASS 204 / 247
.~.~.~.~.~ 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}
243.1  DF  .~.~.~ Fused bath {6}
245  DF  .~.~.~.~ With feeding and/or withdrawal means {2}
247.~.~.~.~.~ Gas withdrawal

DEFINITION

Classification: 204/247

(under subclass 245) Electrolytic cells provided with means to withdraw a gas from the cell chamber.

(1) Note. For other cells with gas withdrawing means see this class, subclasses 256, 258, 266, 270, and 278.