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Priority claimed from FR7128372Aexternal-prioritypatent/FR2148769A5/fr
Priority claimed from FR7211736Aexternal-prioritypatent/FR2178719A1/fr
Application filed by Ressorts Du Nord SafiledCriticalRessorts Du Nord Sa
Publication of DK402475ApublicationCriticalpatent/DK402475A/da
Publication of DK138132BpublicationCriticalpatent/DK138132B/da
Application grantedgrantedCritical
Publication of DK138132CpublicationCriticalpatent/DK138132C/da