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Priority claimed from DE3839087Aexternal-prioritypatent/DE3839087C2/de
Application filed by Schoeller Int EngfiledCriticalSchoeller Int Eng
Priority claimed from EP89913218Aexternal-prioritypatent/EP0396728B2/de
Application grantedgrantedCritical
Publication of ATE93195T1publicationCriticalpatent/ATE93195T1/de