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Priority claimed from DD29961887Aexternal-prioritypatent/DD257274B1/en
Priority claimed from DD29962087Aexternal-prioritypatent/DD257275A1/en
Application filed by Friebe & Reininghaus AhcfiledCriticalFriebe & Reininghaus Ahc
Priority claimed from EP88101400Aexternal-prioritypatent/EP0280886B1/en
Application grantedgrantedCritical
Publication of ATE76117T1publicationCriticalpatent/ATE76117T1/en