Descriptions for F27 and notes/indexes are displayed on this screen.
F27
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FURNACES; KILNS, OVENS OR RETORTS[4]
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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.
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