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Priority claimed from DEE17550Aexternal-prioritypatent/DE1140592B/de
Priority claimed from DEE18554Aexternal-prioritypatent/DE1143837B/de
Application filed by Maximilianshuette EisenwerkfiledCriticalMaximilianshuette Eisenwerk
Publication of BE589981ApublicationCriticalpatent/BE589981A/fr