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Publication date
Priority claimed from HUEE1956Aexternal-prioritypatent/HU163859B/hu
Application filed by Egyesuelt IzzolampafiledCriticalEgyesuelt Izzolampa
Priority claimed from AT7976Aexternal-prioritypatent/AT362595B/en
Publication of ATA521975ApublicationCriticalpatent/ATA521975A/en
Application grantedgrantedCritical
Publication of AT349238BpublicationCriticalpatent/AT349238B/en