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Priority claimed from US06/533,982external-prioritypatent/US4669626A/en
Priority claimed from US06/533,854external-prioritypatent/US4512171A/en
Application filed by Continental Disc CorpfiledCriticalContinental Disc Corp
Priority claimed from EP19840106090external-prioritypatent/EP0137903B1/de
Application grantedgrantedCritical
Publication of ATE36743T1publicationCriticalpatent/ATE36743T1/de