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Priority claimed from US06/392,514external-prioritypatent/US4526340A/en
Application filed by Imp Clevite IncfiledCriticalImp Clevite Inc
Publication of IT8348540A0publicationCriticalpatent/IT8348540A0/it
Application grantedgrantedCritical
Publication of IT1167640BpublicationCriticalpatent/IT1167640B/it