US PATENT SUBCLASS 204 / 417
.~.~.~.~ Liquid ion-exchanger

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

193  DF  APPARATUS {5}
194  DF  .~ Electrolytic {11}
400  DF  .~.~ Analysis and testing {20}
416  DF  .~.~.~ Ion-sensitive electrode {3}
417.~.~.~.~ Liquid ion-exchanger

DEFINITION

Classification: 204/417

Liquid ion-exchanger:

(under subclass 416) Apparatus in which the ion-exchange

medium is a liquid.