G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B19/00—Teaching not covered by other main groups of this subclass
Jeux d'assemblages permettant la construction de volumes susceptibles d'etre articules, dont toutes les pieces se rangent a plat a la facon d'un puzzle