(under the class definition) Subject matter specifically
adapted for melting, or treating glass or silica.
SEE OR SEARCH THIS CLASS, SUBCLASS:
109+, for resistance furnaces, per se.
SEE OR SEARCH CLASS
65, Glass Manufacturing,
335, for nonelectric glass furnaces with furnace charging means; subclass 347 for nonelectric furnaces having a structurally defined delivery or fining zone, and see the search notes thereunder.
