(under the class definition) Apparatus including positive means to remove undesirable material from a glass working or treating apparatus.
SEE OR SEARCH THIS CLASS, SUBCLASS:
27, for process of cleaning glass working or treating apparatus.
SEE OR SEARCH CLASS
134, Cleaning and Liquid Contact With Solids, appropriate subclasses for a process of, or apparatus for cleaning of general application. See the "Search Notes" in the class definition of Class 134.
