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Priority claimed from US07/000,269external-prioritypatent/US4834009A/en
Application filed by Union Special CorpfiledCriticalUnion Special Corp
Publication of IT8768137A0publicationCriticalpatent/IT8768137A0/en
Application grantedgrantedCritical
Publication of IT1231166BpublicationCriticalpatent/IT1231166B/en