Descriptions for F27 and notes/indexes are displayed on this screen.


Note(s)
    This class covers:[7]
      furnaces, kilns, ovens, retorts, open sintering apparatus and other similar apparatus for heat treatment of materials or articles, and details or accessories therefor, in general;the arrangement of electrical heating elements in or on furnaces.
    This class does not cover:
      combustion apparatus per se, i.e. apparatus for direct combination of oxygen gas and a burnable substance;electrical heating elements per se;processes carried on within the furnaces.
    In this class, the following term is used with the meaning indicated:
      "furnaces" covers kilns, ovens, or retorts.