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G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B11/00—Teaching hand-writing, shorthand, drawing, or painting
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FR937170D1946-12-201946-12-20Procédé et dispositifs pour l'exécution de dessins coloriés
ExpiredFR937170A
(fr)