international classification for industrial designs - WIPO
D0062 Desks (School ?). P0857. D0287 Drawing tables. T0031. F0268 Folding tables ... E0113 Exercise devices for disabled persons. E0198. E0135 Eye testing ...
D0062 Desks (School ?). P0857. D0287 Drawing tables. T0031. F0268 Folding tables ... E0113 Exercise devices for disabled persons. E0198. E0135 Eye testing ...