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Priority claimed from DE19853531342external-prioritypatent/DE3531342A1/en
Application filed by Pvg PatentverwertungfiledCriticalPvg Patentverwertung
Priority claimed from EP86112022Aexternal-prioritypatent/EP0220425B1/en
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Publication of ATE63809T1publicationCriticalpatent/ATE63809T1/en