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Priority claimed from DE2305932Aexternal-prioritypatent/DE2305932C3/de
Priority claimed from AT86274Aexternal-prioritypatent/AT360472B/de
Application filed by Kuesters EduardfiledCriticalKuesters Eduard
Publication of ATA622775ApublicationCriticalpatent/ATA622775A/de
Application grantedgrantedCritical
Publication of AT351489BpublicationCriticalpatent/AT351489B/de