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Priority claimed from US06/869,138external-prioritypatent/US5556594A/en
Application filed by Carpenter Technology CorpfiledCriticalCarpenter Technology Corp
Priority claimed from EP87107651Aexternal-prioritypatent/EP0247577B1/de
Application grantedgrantedCritical
Publication of ATE67795T1publicationCriticalpatent/ATE67795T1/de