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Application filed by Obsa SpafiledCriticalObsa Spa
Priority to IT19541/84ApriorityCriticalpatent/IT1175339B/en
Publication of IT8419541A0publicationCriticalpatent/IT8419541A0/en
Application grantedgrantedCritical
Publication of IT1175339BpublicationCriticalpatent/IT1175339B/en