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Priority claimed from FR7041759Aexternal-prioritypatent/FR2114245A5/fr
Application filed by Ugine KuhlmannfiledCriticalUgine Kuhlmann
Priority to DK223873ApriorityCriticalpatent/DK131380B/da
Publication of DK131380BpublicationCriticalpatent/DK131380B/da
Application grantedgrantedCritical
Publication of DK131380CpublicationCriticalpatent/DK131380C/da