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Priority claimed from DE3824873Aexternal-prioritypatent/DE3824873A1/en
Priority claimed from DE3824860Aexternal-prioritypatent/DE3824860A1/en
Application filed by Friedrich BerschfiledCriticalFriedrich Bersch
Priority claimed from EP89112411Aexternal-prioritypatent/EP0351664B1/en
Application grantedgrantedCritical
Publication of ATE101814T1publicationCriticalpatent/ATE101814T1/en