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Priority claimed from DE19671611450external-prioritypatent/DE1611450C3/de
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Publication of FR1588306ApublicationCriticalpatent/FR1588306A/fr
G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B13/00—Teaching typing
G09B13/04—Devices used in association with a real typewriter, teleprinter, or the like