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Application filed by Axel Bertil Elof EnquistfiledCriticalAxel Bertil Elof Enquist
Priority to FI58174ApriorityCriticalpatent/FI53868C/fi
Publication of FI58174ApublicationCriticalpatent/FI58174A/fi
Publication of FI53868BpublicationCriticalpatent/FI53868B/fi
Application grantedgrantedCritical
Publication of FI53868CpublicationCriticalpatent/FI53868C/fi