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Priority claimed from BE8700525Aexternal-prioritypatent/BE1000528A6/fr
Priority claimed from BE8701460Aexternal-prioritypatent/BE1001298A6/fr
Application filed by Centre Rech MetallurgiquefiledCriticalCentre Rech Metallurgique
Priority claimed from EP19880870083external-prioritypatent/EP0290423B1/de
Application grantedgrantedCritical
Publication of ATE78733T1publicationCriticalpatent/ATE78733T1/de