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Application filed by Anders Daniel BacklundfiledCriticalAnders Daniel Backlund
Priority to NO772218ApriorityCriticalpatent/NO149149C/en
Publication of NO772218LpublicationCriticalpatent/NO772218L/en
Publication of NO149149BpublicationCriticalpatent/NO149149B/en
Publication of NO149149CpublicationCriticalpatent/NO149149C/en