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
02.05.2018
Patent
Elektronische Ressource
Englisch
IPC: | B60B VEHICLE WHEELS , Räder für Fahrzeuge |