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Application filed by Ingolv HellandfiledCriticalIngolv Helland
Priority to NO912501ApriorityCriticalpatent/NO172791C/no
Publication of NO912501D0publicationCriticalpatent/NO912501D0/no
Publication of NO912501LpublicationCriticalpatent/NO912501L/no
Publication of NO172791BpublicationCriticalpatent/NO172791B/no
Publication of NO172791CpublicationCriticalpatent/NO172791C/no