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Priority claimed from CH408980Aexternal-prioritypatent/CH636155A5/en
Application filed by Hermann JennifiledCriticalHermann Jenni
Priority claimed from EP19810810182external-prioritypatent/EP0041044B1/en
Application grantedgrantedCritical
Publication of ATE11066T1publicationCriticalpatent/ATE11066T1/en