Reading of books in magneto phonic tape. (Machine-translation by Google Translate, not legally binding)

摘要

Reading of books on magnetic tape characterized by comprising a device applicable to conventional tapes, by which blind and blind people can make use of them, revealing in them, to the touch, some notches or slits, which give the order of the same with perfect relation of chapters, sequences etc ... Applicable to the tape recorder. (Machine-translation by Google Translate, not legally binding)