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Priority claimed from DE1901139475Dexternal-prioritypatent/DE139475C/de
Priority claimed from DE1901137798Dexternal-prioritypatent/DE137798C/de
Application filed by Hermann Knecht & CofiledCriticalHermann Knecht & Co
Priority to AT27447DpriorityCriticalpatent/AT27447B/de
Application grantedgrantedCritical
Publication of AT27447BpublicationCriticalpatent/AT27447B/de