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Priority claimed from SE8200365Aexternal-prioritypatent/SE446620B/en
Publication of NO850873LpublicationCriticalpatent/NO850873L/en
Application filed by John Teodor SonerudfiledCriticalJohn Teodor Sonerud
Priority to NO850873ApriorityCriticalpatent/NO162251C/en
Publication of NO162251BpublicationCriticalpatent/NO162251B/en
Publication of NO162251CpublicationCriticalpatent/NO162251C/en