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Priority claimed from DE1905180169Dexternal-prioritypatent/DE180169C/de
Application filed by Graaff & Compagnie Ges Mit BesfiledCriticalGraaff & Compagnie Ges Mit Bes
Application grantedgrantedCritical
Publication of AT31524BpublicationCriticalpatent/AT31524B/de