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Priority claimed from SE13363/72Aexternal-prioritypatent/SE364622B/xx
Publication of NO763868LpublicationCriticalpatent/NO763868L/no
Application filed by Oestbergs Fabriks AbfiledCriticalOestbergs Fabriks Ab
Priority to NO76763868ApriorityCriticalpatent/NO136276C/no
Publication of NO136276BpublicationCriticalpatent/NO136276B/no
Publication of NO136276CpublicationCriticalpatent/NO136276C/no