(under subclass 170.4) Apparatus having means associated with the vessel for withdrawing evolved gas from the mixture and means whereby some or all of such evolved gas may be returned to the mixture for reentrainment therein before being discharged by the apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
599+, for fluid handling means in which the fluid flow is divided into parallel flow paths and then recombined.
SEE OR SEARCH CLASS
261, Gas and Liquid Contact Apparatus, appropriate subclasses for devices for contacting liquids and gases, generally.
516, Colloid Systems and Wetting Agents; Subcombinations Thereof; Processes of Making, Stabilizing, Breaking, or Inhibiting,
115+, for processes of or compositions for or subcombination compositions for the breaking of or inhibiting of foam colloid systems, when generically claimed or when there is no hierarchically superior provision in the USPC for the specifically claimed art.
