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Priority claimed from SE8300873Aexternal-prioritypatent/SE457223C/sv
Application filed by Ulf Gauffin, Mikael HellstenfiledCriticalUlf Gauffin
Priority claimed from EP83850109Aexternal-prioritypatent/EP0094358B1/de
Application grantedgrantedCritical
Publication of ATE21140T1publicationCriticalpatent/ATE21140T1/de