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Application filed by Renato PianafiledCriticalRenato Piana
Priority to IT22955/81ApriorityCriticalpatent/IT1138073B/it
Publication of IT8122955A0publicationCriticalpatent/IT8122955A0/it
Application grantedgrantedCritical
Publication of IT1138073BpublicationCriticalpatent/IT1138073B/it