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Priority claimed from US06/256,923external-prioritypatent/US4429370A/en
Priority claimed from US06/256,772external-prioritypatent/US4405992A/en
Priority claimed from US06/256,726external-prioritypatent/US4442498A/en
Application filed by Data General CorpfiledCriticalData General Corp
Priority claimed from EP19840200991external-prioritypatent/EP0137526B1/en
Application grantedgrantedCritical
Publication of ATE36418T1publicationCriticalpatent/ATE36418T1/en