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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
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FR560418D1922-04-221922-12-27Perfectionnements aux appareils à copier des documents, des dessins ou autres
ExpiredFR560418A
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