US PATENT SUBCLASS 210 / 426
.~.~.~.~.~ Encased


Current as of: June, 1999
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210 /   HD   LIQUID PURIFICATION OR SEPARATION

348  DF  FILTER {25}
418  DF  .~ With flow controller for material being treated {5}
420  DF  .~.~ Selective directive flow relative to filter {4}
424  DF  .~.~.~ Multi-way valve {1}
425  DF  .~.~.~.~ Backwash {1}
426.~.~.~.~.~ Encased


DEFINITION

Classification: 210/426

(under subclass 425) Apparatus wherein the valve is within the same housing as the filter.