(under subclass 186.1) Compositions which contains an elemental material and which composition is further devoid of water, e.g., graphite, charcoal, metal alloys, oxygen, ozone, etc.
SEE OR SEARCH THIS CLASS, SUBCLASS:
186.33, 186.36 and 187.1+, for compositions containing elemental material in admixture with water.
372+, for gaseous compositions containing elemental gases, e.g., hydrogen and carbon monoxide, hydrogen and nitrogen, etc.