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Application filed by Gregorio Elena Vottiero SilviofiledCriticalGregorio Elena Vottiero Silvio
Priority to IT8740401ApriorityCriticalpatent/IT8740401A0/it
Publication of IT8740401A0publicationCriticalpatent/IT8740401A0/it
IT8740401A1987-01-191987-01-19Sistema di pubblicita' luminosa ad immagini intercambiabili mediante proiezione di diapositive particolari
IT8740401A0
(it)