(under the class definition) Apparatus combined with a gas or vapor separator, which is more than a mere vent and must (1) remove gases evolved during a treating operation or (2) treat gas removed from a Class 210 separator.
SEE OR SEARCH THIS CLASS, SUBCLASS:
472, for a filter with vent means.
539, for a gravitational separator having a vent.
SEE OR SEARCH CLASS
96, Gas Separation: Apparatus, for apparatus for gas separation, per se. See the Class 210 class definition for an amplification of the line.
