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Priority claimed from CH393884Aexternal-prioritypatent/CH659570A5/fr
Priority claimed from CH193585Aexternal-prioritypatent/CH664910A5/fr
Application filed by Stefano Emanuele PietrafracciafiledCriticalStefano Emanuele Pietrafraccia
Priority claimed from EP19850109505external-prioritypatent/EP0171697B1/de
Application grantedgrantedCritical
Publication of ATE51127T1publicationCriticalpatent/ATE51127T1/de