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Priority claimed from NO793874Aexternal-prioritypatent/NO147762C/no
Priority claimed from NO793875Aexternal-prioritypatent/NO149554C/no
Application filed by Jon BergslandfiledCriticalJon Bergsland
Priority claimed from EP19800902267external-prioritypatent/EP0040621B1/de
Application grantedgrantedCritical
Publication of ATE9499T1publicationCriticalpatent/ATE9499T1/de