(under the class definition) Product or process in which the fuel is treated or material is added to a fuel to result in a changed vidual effect, e.g., dyeing or marking the fuel, polishing it, etc.
(1) Note. It is the appearance of the cold fuel, before or after burning, which is modified.
SEE OR SEARCH THIS CLASS, SUBCLASS:
642, for a colorant composition for burning flames.
SEE OR SEARCH CLASS
40, Card, Picture, or Sign Exhibiting, for fluid-carried indicia, per se.
