(under the class definition) Apparatus with ornamental forms, surface ornamentation or an additive or additive means producing flame coloration.
SEE OR SEARCH THIS CLASS, SUBCLASS:
4, for a burning method including feeding a flame modifying additive to a flame.
125, for a burner or igniter structure shaped to have the appearance of another product or article.
SEE OR SEARCH CLASS
44, Fuel and Related Compositions, 603, for a solid fuel composition with combustion improver, and subclass 641 for a solid fuel combustion improving compositions.
356, Optics: Measuring and Testing,
315, for spectroscopic apparatus and subclass 417 for flame photometers comprising a flame holder having means for adding a flame coloring sample combined with a flame observing or analyzing means.
D23, Environmental Heating and Cooling; Fluid Handling and Sanitary Equipment,
318+, for the ornamental design of a boiler or oil burner; and subclasses 403+ for the design of a gas, oil, or vapor stove or log.
