B - Operations – Transporting – 60 – B
Patent
B - Operations, Transporting
60
B
B60B 19/00 (2006.01) B60B 3/00 (2006.01) B62B 5/02 (2006.01) A45C 13/00 (2006.01)
Patent
CA 2593980
A wheel is designed to overcome special ground surfaces, like stairs. A carrying device can be equipped with at least one of such wheel so that a user can haul the carrying device to pass through special ground surfaces, like stairs, with ease and smoothness.
Chang Hsueh-Er
Deeth Williams Wall Llp
LandOfFree
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