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Priority claimed from US06/272,507external-prioritypatent/US4476523A/en
Priority claimed from US06/272,777external-prioritypatent/US4476537A/en
Priority claimed from US06/272,541external-prioritypatent/US4468748A/en
Application filed by Data General CorpfiledCriticalData General Corp
Priority claimed from EP19820302998external-prioritypatent/EP0067667B1/de
Application grantedgrantedCritical
Publication of ATE36611T1publicationCriticalpatent/ATE36611T1/de