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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
G09B29/02—Maps; Plans; Charts; Diagrams, e.g. route diagram sectional
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FR761942D1932-09-061933-09-05Perfectionnements aux livrets indicateurs
ExpiredFR761942A
(fr)