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Priority claimed from SE7908863Aexternal-prioritypatent/SE7908863L/en
Priority claimed from SE7908864Aexternal-prioritypatent/SE7908864L/en
Priority claimed from SE7908865Aexternal-prioritypatent/SE7908865L/en
Application filed by Dala Invest AbfiledCriticalDala Invest Ab
Priority claimed from EP80106544Aexternal-prioritypatent/EP0028025B1/en
Application grantedgrantedCritical
Publication of ATE3906T1publicationCriticalpatent/ATE3906T1/en