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Priority claimed from SE8800976Aexternal-prioritypatent/SE464983B/sv
Priority claimed from SE8804217Aexternal-prioritypatent/SE467164B/sv
Application filed by Ture HedstroemfiledCriticalTure Hedstroem
Priority claimed from EP89850089Aexternal-prioritypatent/EP0333690B1/de
Application grantedgrantedCritical
Publication of ATE92567T1publicationCriticalpatent/ATE92567T1/de