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Application filed by Bror Thure Fridolf EkmanfiledCriticalBror Thure Fridolf Ekman
Priority to FI334468ApriorityCriticalpatent/FI54398C/fi
Application grantedgrantedCritical
Publication of FI54398BpublicationCriticalpatent/FI54398B/fi
Publication of FI54398CpublicationCriticalpatent/FI54398C/fi