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Priority claimed from SE8601432Aexternal-prioritypatent/SE457759B/sv
Priority claimed from SE8604221Aexternal-prioritypatent/SE454826B/sv
Application filed by Nokia Data System AbfiledCriticalNokia Data System Ab
Priority claimed from PCT/SE1987/000109external-prioritypatent/WO1987006054A1/en
Application grantedgrantedCritical
Publication of ATE52388T1publicationCriticalpatent/ATE52388T1/de