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Priority claimed from NO415971Aexternal-prioritypatent/NO132106C/no
Priority claimed from NO290172Aexternal-prioritypatent/NO135714C/no
Application filed by Sigurd HeienfiledCriticalSigurd Heien
Publication of DK140701BpublicationCriticalpatent/DK140701B/da
Application grantedgrantedCritical
Publication of DK140701CpublicationCriticalpatent/DK140701C/da