US PATENT SUBCLASS 204 / 238
.~.~.~.~ With filter

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

193  DF  APPARATUS {5}
194  DF  .~ Electrolytic {11}
232  DF  .~.~ Cells with electrolyte treatment means {4}
237  DF  .~.~.~ Recirculation {2}
238.~.~.~.~ With filter

DEFINITION

Classification: 204/238

(under subclass 237) Apparatus in which the additional electrolyte treatment means includes a filter.

(1) Note. Search also this class, subclass 235.

(2) Note. Compare with this class, subclass 240.

(3) Note. For electrolytic cells having filter means, see this class, subclasses 249, 264 and 276.