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Priority claimed from NO853897Aexternal-prioritypatent/NO853897L/no
Publication of NO890922LpublicationCriticalpatent/NO890922L/no
Application filed by George Thomas Richard CampbellfiledCriticalGeorge Thomas Richard Campbell
Priority to NO890922ApriorityCriticalpatent/NO890922D0/no
Publication of NO890922D0publicationCriticalpatent/NO890922D0/no