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Priority claimed from DE19833328630external-prioritypatent/DE3328630A1/en
Application filed by Zeller Plastik Koehn GraebnerfiledCriticalZeller Plastik Koehn Graebner
Priority claimed from EP84109037Aexternal-prioritypatent/EP0133983B1/en
Application grantedgrantedCritical
Publication of ATE29999T1publicationCriticalpatent/ATE29999T1/en