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Priority claimed from US06/736,301external-prioritypatent/US4642688A/en
Application filed by Scientific AtlantafiledCriticalScientific Atlanta
Publication of NO870231D0publicationCriticalpatent/NO870231D0/no
Publication of NO870231LpublicationCriticalpatent/NO870231L/no
Publication of NO170450BpublicationCriticalpatent/NO170450B/no
Publication of NO170450CpublicationCriticalpatent/NO170450C/no