Patent
The BallCuber : 4x4x4 Rubik's Cube solving machine
The invention is protected in France under a Patent registered on April 2019.
The invention was published in the official journal of November 2020 (bopi2045 page 35) :
https://www.inpi.fr/sites/default/files/bopis/bopi2045.pdf
Download : patent_Dispositif-de-manipulation-de-Rubik-s-cube-de-taille-4x4x4.pdf