US PATENT SUBCLASS 210 / 216
.~.~ Moving filter medium

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

198.1  DF  WITH MEANS TO ADD TREATING MATERIAL {5}
209  DF  .~ Directly applied to separator {5}
216.~.~ Moving filter medium {1}
217  DF  .~.~.~> Drum

DEFINITION

Classification: 210/216

(under subclass 209) Apparatus by which the additional material is applied to a moving filter medium.