(under subclass 170.1) Apparatus having means for sensing a force exerted by the mixture or of either of its component parts, or means for sensing a fluid level, such means causing operation of a control device.
SEE OR SEARCH THIS CLASS, SUBCLASS:
386+, for liquid level responsive or maintaining systems of general application.
SEE OR SEARCH CLASS
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.
