(under the class definition) Apparatus comprising a flexible track mounted about the periphery of a single wheel to completely surround such wheel and be carried solely thereby.
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4, for steppers comprising plates pivotally secured to the rim of a wheel to act as ground engaging feet.
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152, Resilient Tires and Wheels,
208+, for antiskid devices for resilient tires.
301, Land Vehicles: Wheels and Axles, 42, for chain-type antiskid devices for wheels.
