(under subclass 279) Infusion apparatus of the type in which (1) the infusible material is subjected to the action of a vaporized liquid, usually steam, (2) the infusible material is contacted with condensate of the infusing fluid, or (3) the infusing device is provided with some special means to extract the heat of vaporization of, or to receive the condensate of, either the infusing fluid or a volatile
constituent of the infusible material.
SEE OR SEARCH CLASS
126, Stoves and Furnaces,
369+, for steaming apparatus and subclasses 381+ for water heaters provided with condensers.
