Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EMILE D ARLES
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EMILE D ARLES
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Application filed by EMILE D ARLESfiledCriticalEMILE D ARLES
Application grantedgrantedCritical
Publication of FR333307ApublicationCriticalpatent/FR333307A/fr
G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B19/00—Teaching not covered by other main groups of this subclass
G09B19/02—Counting; Calculating
FR333307D1903-06-231903-06-23Appareil pour l'enseignement du calcul
ExpiredFR333307A
(fr)