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Priority claimed from SE8601000Aexternal-prioritypatent/SE459872B/sv
Priority claimed from SE8604925Aexternal-prioritypatent/SE460548B/sv
Application filed by Swedoor AbfiledCriticalSwedoor Ab
Priority claimed from EP19870850066external-prioritypatent/EP0236287B1/de
Application grantedgrantedCritical
Publication of ATE59207T1publicationCriticalpatent/ATE59207T1/de