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Priority claimed from NO882511Aexternal-prioritypatent/NO882511D0/no
Priority claimed from NO882753Aexternal-prioritypatent/NO882753D0/no
Application filed by Alf Johan BjerkefiledCriticalAlf Johan Bjerke
Priority to NO883033ApriorityCriticalpatent/NO883033D0/no
Publication of NO883033D0publicationCriticalpatent/NO883033D0/no