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Priority claimed from US06/358,135external-prioritypatent/US4471380A/en
Application filed by Scientific AtlantafiledCriticalScientific Atlanta
Publication of NO834158LpublicationCriticalpatent/NO834158L/en
Publication of NO162050BpublicationCriticalpatent/NO162050B/en
Publication of NO162050CpublicationCriticalpatent/NO162050C/en