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Priority claimed from DE19873706955external-prioritypatent/DE3706955A1/de
Application filed by Siemens Nixdorf Inf SystfiledCriticalSiemens Nixdorf Inf Syst
Priority claimed from EP88103012Aexternal-prioritypatent/EP0281057B1/de
Application grantedgrantedCritical
Publication of ATE105642T1publicationCriticalpatent/ATE105642T1/de
AT8888103012T1987-03-041988-02-29Schaltungsanordnung zur sicherung des zugangs zu einem datenverarbeitungssystem mit hilfe einer chipkarte.
ATE105642T1
(de)