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Application filed by Helge SpilhaugfiledCriticalHelge Spilhaug
Priority to NO772819ApriorityCriticalpatent/NO140923C/en
Publication of NO772819LpublicationCriticalpatent/NO772819L/en
Publication of NO140923BpublicationCriticalpatent/NO140923B/en
Publication of NO140923CpublicationCriticalpatent/NO140923C/en