US PATENT SUBCLASS 210 / 140
.~.~ Preparation for treating operation

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

138  DF  WITH TIME CONTROL {1}
139  DF  .~ Of additional fluid {1}
140.~.~ Preparation for treating operation

DEFINITION

Classification: 210/140

(under subclass 139) Apparatus in which the additional fluid serves to prepare the treating means for a treating operation.