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Individual
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Individual
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Publication of FR3369EpublicationCriticalpatent/FR3369E/fr
G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
Landscapes
Engineering & Computer Science
(AREA)
Business, Economics & Management
(AREA)
Physics & Mathematics
(AREA)
Educational Administration
(AREA)
Educational Technology
(AREA)
General Physics & Mathematics
(AREA)
Theoretical Computer Science
(AREA)
FR3369D1903-06-261904-06-15Perfectionnements dans le montage des images rondes pouvant servir d'article d'enseignement, d'objet d'amusement, etc.
ExpiredFR3369E
(fr)