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Priority claimed from DK359958Aexternal-prioritypatent/DK107486C/da
Priority claimed from FR790963Aexternal-prioritypatent/FR1267156A/fr
Application filedfiledCritical
Priority to FR837270ApriorityCriticalpatent/FR498M/fr
Application grantedgrantedCritical
Publication of FR498MpublicationCriticalpatent/FR498M/fr