US PATENT SUBCLASS 210 / 190
WITH EXTERNAL SUPPLY MEANS FOR REGENERATING MEDIUM, E.G., WATER SOFTENING SYSTEM

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

190WITH EXTERNAL SUPPLY MEANS FOR REGENERATING MEDIUM, E.G., WATER SOFTENING SYSTEM {1}
191  DF  .~> With pump, injector or siphon

DEFINITION

Classification: 210/190

(under the class definition) Apparatus in which means is provided for the purpose of conveying, preparing or storing a liquid which is used to restore a chemical affinity of the separatory medium.