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Priority claimed from US06/080,498external-prioritypatent/US4278979A/en
Application filed by Acr ElectronicsfiledCriticalAcr Electronics
Publication of NO811821LpublicationCriticalpatent/NO811821L/en
Publication of NO155947BpublicationCriticalpatent/NO155947B/en
Publication of NO155947CpublicationCriticalpatent/NO155947C/en