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Priority claimed from AT216084Aexternal-prioritypatent/AT382171B/de
Application filed by Fehrer ErnstfiledCriticalFehrer Ernst
Priority to AT245684ApriorityCriticalpatent/AT388178B/de
Publication of ATA245684ApublicationCriticalpatent/ATA245684A/de
Application grantedgrantedCritical
Publication of AT388178BpublicationCriticalpatent/AT388178B/de