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Application filed by Ignazio SpigafiledCriticalIgnazio Spiga
Priority to IT12480/81ApriorityCriticalpatent/IT1145957B/it
Publication of IT8112480A0publicationCriticalpatent/IT8112480A0/it
Application grantedgrantedCritical
Publication of IT1145957BpublicationCriticalpatent/IT1145957B/it