(under subclass 5.2) Vehicles having a plate-like surface or rollerway positioned on the vehicle and designed to engage the edge portion of the step or abutment to facilitate movement of the vehicle thereacross.
SEE OR SEARCH THIS CLASS, SUBCLASS:
5.32, for roller attachments providing a fulcrum support for a vehicle.
7.12, for wheeled velocipedes convertible to or from runner type.
8+, for miscellaneous vehicles provided with wheeled and runner type running gear.
