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Priority claimed from CH4164/89Aexternal-prioritypatent/CH680514A5/de
Application filed by Rieter Ag MaschffiledCriticalRieter Ag Maschf
Priority claimed from EP90810018Aexternal-prioritypatent/EP0379465B1/de
Application grantedgrantedCritical
Publication of ATE92118T1publicationCriticalpatent/ATE92118T1/de