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Application filed by John HefiledCriticalJohn He
Priority to NO844238ApriorityCriticalpatent/NO157052C/en
Publication of NO844238LpublicationCriticalpatent/NO844238L/en
Publication of NO157052BpublicationCriticalpatent/NO157052B/en
Publication of NO157052CpublicationCriticalpatent/NO157052C/en