Some embodiments are directed to a generally planar wheel, including a multi-layer cardboard body having at least one layer of a high-density cardboard sheet sandwiched between at least two layers of low-density cardboard sheet.
CARDBOARD MADE WHEEL
RAD
ROUE
2018-05-02
Patent
Electronic Resource
English
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |