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Priority claimed from GB1439573Aexternal-prioritypatent/GB1461398A/en
Application filed by Rca CorpfiledCriticalRca Corp
Priority to AT873376ApriorityCriticalpatent/AT359295B/de
Publication of ATA873376ApublicationCriticalpatent/ATA873376A/de
Application grantedgrantedCritical
Publication of AT359295BpublicationCriticalpatent/AT359295B/de