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Priority claimed from SE7908455Aexternal-prioritypatent/SE436330B/sv
Priority claimed from SE8000664Aexternal-prioritypatent/SE427096B/sv
Application filed by Swedspan AbfiledCriticalSwedspan Ab
Priority claimed from EP80106013Aexternal-prioritypatent/EP0027583B1/de
Application grantedgrantedCritical
Publication of ATE6940T1publicationCriticalpatent/ATE6940T1/de