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Priority claimed from GB2279/74Aexternal-prioritypatent/GB1500902A/en
Application filed by Thorn Electrical Ind LtdfiledCriticalThorn Electrical Ind Ltd
Priority to AT486278ApriorityCriticalpatent/AT359601B/de
Publication of ATA486278ApublicationCriticalpatent/ATA486278A/de
Application grantedgrantedCritical
Publication of AT359601BpublicationCriticalpatent/AT359601B/de