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Application filed by Thorvald Helmuth J Frederiksen, Niels Wilhelm NielsenfiledCriticalThorvald Helmuth J Frederiksen
Priority to DK111245ApriorityCriticalpatent/DK66110C/da
Application grantedgrantedCritical
Publication of DK66110CpublicationCriticalpatent/DK66110C/da