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Priority claimed from DE19833331855external-prioritypatent/DE3331855A1/en
Priority claimed from DE19838327385external-prioritypatent/DE8327385U1/en
Application filed by Niveau AgfiledCriticalNiveau Ag
Priority claimed from EP83112291Aexternal-prioritypatent/EP0134309B1/en
Application grantedgrantedCritical
Publication of ATE20003T1publicationCriticalpatent/ATE20003T1/en