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Priority claimed from GB19327/76Aexternal-prioritypatent/GB1524747A/en
Application filed by Ici PlcfiledCriticalIci Plc
Priority to AT328484ApriorityCriticalpatent/AT379599B/de
Publication of ATA328484ApublicationCriticalpatent/ATA328484A/de
Application grantedgrantedCritical
Publication of AT379599BpublicationCriticalpatent/AT379599B/de