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Priority claimed from DE8902848Uexternal-prioritypatent/DE8902848U1/de
Priority claimed from DE8909248Uexternal-prioritypatent/DE8909248U1/de
Application filed by Siemens Nixdorf Inf SystfiledCriticalSiemens Nixdorf Inf Syst
Priority claimed from EP90903779Aexternal-prioritypatent/EP0462127B1/de
Application grantedgrantedCritical
Publication of ATE90464T1publicationCriticalpatent/ATE90464T1/de