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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
G09B29/00—Maps; Plans; Charts; Diagrams, e.g. route diagram
G09B29/06—Maps; Plans; Charts; Diagrams, e.g. route diagram of belt form, e.g. endless belt
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FR678091D1928-10-251928-10-25Système de signalisation de route sur les voitures et appareil pour le réaliser
ExpiredFR678091A
(fr)