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Priority claimed from US05/870,789external-prioritypatent/US4226083A/en
Application filed by United Technologies CorpfiledCriticalUnited Technologies Corp
Publication of IT7919421A0publicationCriticalpatent/IT7919421A0/en
Application grantedgrantedCritical
Publication of IT1110990BpublicationCriticalpatent/IT1110990B/en