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Application filed by Umberto Ghignone & C S N CfiledCriticalUmberto Ghignone & C S N C
Priority to IT20197/87ApriorityCriticalpatent/IT1203942B/it
Publication of IT8720197A0publicationCriticalpatent/IT8720197A0/it
Application grantedgrantedCritical
Publication of IT1203942BpublicationCriticalpatent/IT1203942B/it