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Priority claimed from DE1900129480Dexternal-prioritypatent/DE129480C/de
Application filed by Friedrich BolegfiledCriticalFriedrich Boleg
Priority to AT12717DpriorityCriticalpatent/AT12717B/de
Application grantedgrantedCritical
Publication of AT12717BpublicationCriticalpatent/AT12717B/de