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Priority claimed from GB5108668Aexternal-prioritypatent/GB1249473A/en
Priority claimed from FI75669Aexternal-prioritypatent/FI53570C/fi
Application filed by Ici LtdfiledCriticalIci Ltd
Publication of FI752918ApublicationCriticalpatent/FI752918A/fi
Publication of FI53449BpublicationCriticalpatent/FI53449B/fi
Application grantedgrantedCritical
Publication of FI53449CpublicationCriticalpatent/FI53449C/fi