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Priority claimed from SE10924/70Aexternal-prioritypatent/SE357085B/xx
Priority claimed from SE7016033Aexternal-prioritypatent/SE372642B/xx
Priority claimed from SE7016031*Aexternal-prioritypatent/SE372643B/xx
Application filed by Sven Anders HemgrenfiledCriticalSven Anders Hemgren
Publication of ATA693871ApublicationCriticalpatent/ATA693871A/en
Application grantedgrantedCritical
Publication of AT328341BpublicationCriticalpatent/AT328341B/en
Device for the production of structural elements made of steel consisting of two parallel longitudinal bars and cross-connectors welded between them like rungs