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Application filed by Goesta Bostroem, Birger ErikssonfiledCriticalGoesta Bostroem
Priority to DK527179ApriorityCriticalpatent/DK145642C/da
Publication of DK527179ApublicationCriticalpatent/DK527179A/da
Publication of DK145642BpublicationCriticalpatent/DK145642B/da
Application grantedgrantedCritical
Publication of DK145642CpublicationCriticalpatent/DK145642C/da