(under subclass 17.1) Processes comprising (1) the step of forming a product utilizing glass in the molten or plastic state as the starting material, and (2) fire-polishing the product formed; see the Glossary for the definition of fire-polishing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
61, for a process of grinding to polish.
120, for a process of fire-polishing a glass preform by use of a flame, per se; and see the "Search Notes" thereunder.
227+, for diverse glass working apparatus including fire-polishing means.
252, for plural distinct glass working apparatus comprising fire-polishing means.
