US PATENT SUBCLASS 105 / 443
Current as of: June, 1999
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(under the class definition) Steps adapted for use only on railway rolling-stock.
SEE OR SEARCH CLASS
52, Static Structures (e.g., Buildings),
177+, for wear or friction increasing traffic carrying surface, and subclasses 182+ for miscellaneous stepped surfaces.
182, Fire Escape, Ladder, or Scaffold,
93+, for a wall attached ladder.
280, Land Vehicles, 163, for steps for land vehicles.