Voce
Optophone
                lingua
                
                        Eng
                estratti collegati
                
                
                     Raoul  Hausmann, Device to transform numbers on photoelectric basis, London Patent office, 25/09/1934, Londra 
 Jacques  Donguy, Machine Head: Raoul Hausmann and the Optophone, in «Leonardo»Vol. 34, No. 3, The Mitt Press, 01/01/2001, Cambridge 
 (a cura di), On a Type-reading Optophone, in «Proceedings of the Royal Society of London»Volume 90, Issue 619, Royal Society of London, 01/07/1914, Londra 
            