FR349E - Un appareil destiné à faciliter l'enseignement du calcul élémentaire dans les écoles primaires dit "calculaire universel richaud"
- Google Patents
Un appareil destiné à faciliter l'enseignement du calcul élémentaire dans les écoles primaires dit "calculaire universel richaud"
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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IndividualfiledCriticalIndividual
Application grantedgrantedCritical
Publication of FR349EpublicationCriticalpatent/FR349E/fr
FR349D1901-03-071902-02-27Un appareil destiné à faciliter l'enseignement du calcul élémentaire dans les écoles primaires dit "calculaire universel richaud"
ExpiredFR349E
(fr)
Appareil dit "pianistophile" destiné à développer les forces et l'agilité des doigts annulaires (quatrièmes doigts) dans l'étude du piano