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.)
Bell and Howell Co
Original Assignee
Bell and Howell Co
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
Priority claimed from US587127Aexternal-prioritypatent/US3404894A/en
Application filed by Bell and Howell CofiledCriticalBell and Howell Co
Priority to FR124094ApriorityCriticalpatent/FR1540690A/fr
Application grantedgrantedCritical
Publication of FR1540690ApublicationCriticalpatent/FR1540690A/fr
G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
G09B5/06—Electrically-operated educational appliances with both visual and audible presentation of the material to be studied
G09B5/062—Combinations of audio and printed presentations, e.g. magnetically striped cards, talking books, magnetic tapes with printed texts thereon
FR124094A1966-10-171967-10-11Appareil d'enregistrement comportant un mécanisme pour changer la position de cartes d'enregistrement
ExpiredFR1540690A
(fr)