US PATENT CLASS 238
Class Notes
Current as of: June, 1999
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DEFINITION
Classification: 238/
This class includes patents relating to surface railway-tracks which in their make-up include road-bed structure, rail-supporting elements--such as stringers, ties, rail-chairs, and tie-plates--rails, rail-joints, rail-bonds, track and rail-joint fastenings, and electric insulation as applied to ties, rails, rail-joints, rail-bonds, and track-fastenings.
LINES WITH OTHER CLASSES
This class does not include patents for switches, rail-crossings, and frogs, which will be found in Class 246, Railway Switches and Signals.
Tracks for panel hangers and travelers are in Class 16, Miscellaneous Hardware, subclass 96.