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Priority claimed from GB2032466Aexternal-prioritypatent/GB1138304A/en
Priority claimed from GB20323/66Aexternal-prioritypatent/GB1138303A/en
Application filed by Bullfinch Ltd, R LynesfiledCriticalBullfinch Ltd
Publication of DK115901BpublicationCriticalpatent/DK115901B/da