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Application filed by Frederick S SchilerfiledCriticalFrederick S Schiler
Priority to IT50019/80ApriorityCriticalpatent/IT1127900B/it
Publication of IT8050019A0publicationCriticalpatent/IT8050019A0/it
Application grantedgrantedCritical
Publication of IT1127900BpublicationCriticalpatent/IT1127900B/it