US PATENT SUBCLASS 238 / 150
.~ Substance
Current as of: June, 1999
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DEFINITION
Classification: 238/150
Materials, substances, compositions, or alloys for rails.
SEE OR SEARCH CLASS
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, etc., appropriate subclasses for rails claimed broadly by name only and defined solely by their metal or alloy composition even though there is no claim to the metal or alloy, per se. Metal or alloy compositions used in rails are also found in Class 75.
148, Metal Treatment, appropriate subclasses for rails claimed broadly by name only and defined significantly or broadly solely by their metal or alloy composition and including a specific Class 148 treatment of the metal or alloy, or for products distinguished only by the internal structure or characteristics of the metals, metallic compositions or alloys comprising such structures.
428, Stock Material or Miscellaneous Articles,
544+, for nominally claimed metallic track, that is, having some structural description, but insufficient to limit its use to that of a railway track, element, adjunct or material.
